{
  "manageEntity": {
    "action": "Save",
    "entityId": "1437175556",
    "entityType": "Track",
    "nonce": "0x09b01e5183a9ccccbd4d3e4d035db76736076485ef9f3efd1cc2ad0c7cf6d6aa",
    "signature": "0xf6d1c7f2da8f9c0273433cfb403415c3c20dc2266b2f774ae4e38b0e4c7f01d47df20880c9eb58ac87c5b962de5df9c265b2804a0a91297c7d690e801217bb521c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}