{
  "manageEntity": {
    "action": "Save",
    "entityId": "1375164269",
    "entityType": "Track",
    "nonce": "0x5007b7f63ea20eb7eb96c074d813d782c3c2ff16bb35294ecf5db9ac20205190",
    "signature": "0x6d63ad6fca32de421f53e22dde3091c4fd10a7a7de848a6c7989493762fd1bc757fddbf530448f52570c068c734ec970f48103767fd85026d7dc716473fc195e1b",
    "signer": "0xa22176a11BF6703EFe39D488aA7cC06aa781C44A",
    "userId": "633924738"
  }
}