{
  "manageEntity": {
    "action": "Save",
    "entityId": "1320288966",
    "entityType": "Track",
    "nonce": "0xb1aae9a7df3eb0e076f66c6b7aa60312dc64a0331e8cfa10bffdd752012cb8cf",
    "signature": "0xb8ab618ccbaa9025d5e72d8ffdf51f787fcfd67b851559d2a39354fb526492e365acf62df2f5468bf28138c1e5a7a7a2dee788dca0e068e131e36c353843299a1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}