{
  "manageEntity": {
    "action": "Save",
    "entityId": "1896983141",
    "entityType": "Track",
    "nonce": "0x315cace17950e375dccfbe3ae933279e8e69ba905e25298fb2be3f26254d5c26",
    "signature": "0xda32829029a05af576ae97efb2ab028fa5be5ac93f90431e98bba58373bdfbf507c89709614f40df6831ebb095cc508d1c4fdb5168320d30d7549a12ccd2836c1c",
    "signer": "0xb175867C02AeCd449963dcdf49E8710D84e56b11",
    "userId": "181053434"
  }
}