{
  "manageEntity": {
    "action": "Update",
    "entityId": "403030589",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x25c8ab2829fb9637dde02d0775a5bd43aaacb6f93e75d4bac33d4c0f13f0d747",
    "signature": "0x50b6ececb86bdcce5ad8207fee8e1caac715dcc42e751b95002e992fc33f2cad0cfc0897f9f4ae641461d66797079ef447004a56e4ef620572ed2ddba6dff4051c",
    "signer": "0xE988e6Eebc4127285f629AE1492891F39a8a127F",
    "userId": "403030589"
  }
}