{
  "manageEntity": {
    "action": "Save",
    "entityId": "203684798",
    "entityType": "Track",
    "nonce": "0x1756b6f713fd04cecdd22b7e278ef3c911243e03ed26ca16ae6e8c81cda2d7d6",
    "signature": "0x3eb017bbd87fd74605769f0e5e3f90497414ff798b478d94b074b06ed20b36ec77f4030a26f4305782bd49e7ec3f9c7360ea46494932e04c417da247352271b81b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}