{
  "manageEntity": {
    "action": "Save",
    "entityId": "165776",
    "entityType": "Track",
    "nonce": "0x0de63e73841b2cb4b1f6fcb62c1534ad3e10f57faabf9408bcf60cfb36fd5088",
    "signature": "0xb3da38663aab263260264bed4d5d7449b4a8da7e3e57994247b22613588a4f9c6e57176798880c17e6fb7448b655a05fd14a18d5d09e1f44a4f26019b320844e1c",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}