{
  "manageEntity": {
    "action": "Save",
    "entityId": "2055617332",
    "entityType": "Track",
    "nonce": "0x6073a77c910abcdc762a995c44ca3a18574d4174d0325843587fe260a34354b3",
    "signature": "0x40359487331d6f0538f5122c74759426ad379a8f1e94ec03808469b27cc0654b6fe340e88b6998b5d20cb5d5c2d8033cd100692efa6e04e4691b33d3e3829ce11c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}