{
  "manageEntity": {
    "action": "Save",
    "entityId": "2089260222",
    "entityType": "Track",
    "nonce": "0xdeb3efe2193b4fb642509cf0f9163b3b15bfbb2a4ca24df9fb11ed6526be1d51",
    "signature": "0x66419321d313bb8632153c75ad8248ef18e15359760b14aa3b694b73a699f31b742a6059b4a43a5866c6a9cd958e3a23685010a00232dd1d90acdb5a04171a631c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}