{
  "manageEntity": {
    "action": "Save",
    "entityId": "296367",
    "entityType": "Track",
    "nonce": "0xfa00686a703edea842d8ffc30bf4c137e2f165111d80930cca59fe337e59176b",
    "signature": "0x745928a1ef3fae06d4b7ace021d191fd02b25d1fe65e14e437dd4213c538568e3ace2ef4ae1bba94171e97441438ed631db32221ee95474076c60974a1436cf11c",
    "signer": "0x4Aa8154A33F33394BA8De574d71aC98Ba6A47D5a",
    "userId": "645720561"
  }
}