{
  "manageEntity": {
    "action": "Save",
    "entityId": "1772038259",
    "entityType": "Track",
    "nonce": "0x17079d1b3dd380a8bd48f3008435520bd3357667ac85fc814fdd3f31740264fc",
    "signature": "0x338541ebf494c51abf7b898ac1688e44512d82866d65c66fe13757a44c77e6b9172cf28727bf2868fd55a580804e8c11029f44fe40aec72b2ebcf6f52f99ef3b1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}