{
  "manageEntity": {
    "action": "Update",
    "entityId": "492531535",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraim5qirk5mj5f5rxelx2e4575t3rimxwtheniikaoo7wldyhbp4nq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":767085494}]}}}",
    "nonce": "0xbb8f3cb3d705eb66091710959a0ca96889bb8fac6197399ae74c1e13c4f8526d",
    "signature": "0x8ab87e5e17ff06c94d82c4e5a5dac62efd6ffb4faede2f65f71fd9879096094175ef22a27c1d803b42363eb1564f3465fbaf079e513222b13be0488fee8778361b",
    "signer": "0x54B193bF6F1e27B02Cd72343a3e68cd19c0110a5",
    "userId": "492531535"
  }
}