{
  "manageEntity": {
    "action": "Update",
    "entityId": "383087390",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraystkxyygplwci2v2etfeou4lwfvaok3qz4qdjjuvmnwwpu7kmmgq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":703025000}]}}}",
    "nonce": "0x7933adbf56bf947968936f9bb89023c814967bdb4f6c727810d7ca9fa60981db",
    "signature": "0xff88acf66a4cb6facf13c07a7d03ba9677ef1e92a244359c9ecd066863467d623aebd0629ea8599b52b2f2c49718a43c11ee4070fad156491c2ac56e254791571c",
    "signer": "0x73a5C9c8F51d7CBA0cc1Be9c1B5824A1E47C732c",
    "userId": "383087390"
  }
}