{
  "manageEntity": {
    "action": "Save",
    "entityId": "2104086335",
    "entityType": "Track",
    "nonce": "0xa8bf08b3216cb339e2cac845f755e275b48317938d54b8a0fee99fae1e2624f2",
    "signature": "0x670e32bad9f23e454165f43a5c615cf26c03f1b298f84df25ae4abc5053008fe557ee7a464013d99028e7c4f9c291f93542c6c709950af43610d4228091c04661b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}