{
  "manageEntity": {
    "action": "Update",
    "entityId": "492531535",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierah2j6iunlqvaafw4fmqcy47patviudm6dlrl2uejzse2t6p4m2f5a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":767085494},{\"type\":\"playlist\",\"playlist_id\":1453952596},{\"type\":\"playlist\",\"playlist_id\":830210335}]}}}",
    "nonce": "0x099de446ed011ba761dd9556b4706e0400d2407d6901f0767788c8eafe4bfdc1",
    "signature": "0x4e3bdb460120b5ed85877fca8f16a7acb772d82dab5c96565179a0dce43f864d15fd7d8ec1e45a0ca8070fd209eed5af70f9727333126aa6c51b66f19b7060201b",
    "signer": "0x54B193bF6F1e27B02Cd72343a3e68cd19c0110a5",
    "userId": "492531535"
  }
}