{
  "manageEntity": {
    "action": "Save",
    "entityId": "1206233860",
    "entityType": "Track",
    "nonce": "0xbc5460d12d0a06ec576fc8600d097df2c4f16d20c31229fbbb3b7729d1eb291e",
    "signature": "0xafa310c81fe00c8036636549a7bd48a9cf7df370755d2ce1de9f39698a4651931d530c99d2827b1777712f777370b4fa5a5b8febfc1018a74b99b033a778414f1b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}