{
  "manageEntity": {
    "action": "Update",
    "entityId": "310855216",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraquo7ubvfp56r3df2e2opy3ypciigzp3ujhhggbotwuuyohwzhknq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1315292290}]}}}",
    "nonce": "0xcad22df186cd585bfc34e2c9b577f7a80d237fb5cc46c58ba0aa681712e59b2d",
    "signature": "0xe3d78e6a7d132d357fdc4c9a6ad9be1ae47967c031dc6eec10d1de6682ceacc4344242fb8ffed4c1fa8f28c167cd115c0fbf6082c92910759754373b0805ebe81c",
    "signer": "0x4D040D6DF64f27D5075003520f79418826dD6014",
    "userId": "310855216"
  }
}