{
  "manageEntity": {
    "action": "Update",
    "entityId": "116504833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x00c399679b2896423027676fa3222b48a60d1adbba511d4f755b509294c4b57a",
    "signature": "0xc5de8563696148b1ea29361431a9c8f6e0f38d49734bd32e37379daa8d4dd2ee27e5f0b55d98e8ba5913c6f506e84bf52d816a7ebc0437b08643fe0e8deab4471c",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}