{
  "manageEntity": {
    "action": "Update",
    "entityId": "512650949",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x24c049aeff3ad81b8e988a489460189ba3c76dc2714fa1fcd663fd6bc4ddb558",
    "signature": "0x2fb40ba06c443af263f0da2cda2fa194e67f39340bb3f05b03ecf66d190a52b350049d212391b65c2cbf4613039f01b97bf5d0d918f130fa6f040acbef500f471c",
    "signer": "0xf797f02D186eBb3D55DE736700BBEF00e8fCcEEb",
    "userId": "512650949"
  }
}