{
  "manageEntity": {
    "action": "Update",
    "entityId": "492531535",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7dvlgbsoymvtpscv3bjoco3efoieisopk7tiez346nttrflxmoja\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":767085494},{\"type\":\"playlist\",\"playlist_id\":1453952596}]}}}",
    "nonce": "0xf87140de70bc4fa67e2785431065d387cd998d4e1fa68f2b0c93ae2c7b6301a1",
    "signature": "0x3f2617a01620ed4134c406b88acd86368a5ced24a945bbbddb692fa227ec898148673a38225965187493bf2ce941a6b5046a4f6d6d29689ccacf5c5bd58a98881b",
    "signer": "0x54B193bF6F1e27B02Cd72343a3e68cd19c0110a5",
    "userId": "492531535"
  }
}