{
  "manageEntity": {
    "action": "Save",
    "entityId": "1980806310",
    "entityType": "Track",
    "nonce": "0xcbc160c1616dfb95f87f4438ad5fc966e928a1755b05ac29ee5651db2c374f3d",
    "signature": "0x1fcab922e0b733ab8a699d1f541810cc16a772e3e0d5ef5d77758a5715244bd57b31110fa4c390c7b22d4372e948505798d2c59a828b5c3ec03755261f739c571b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}