{
  "manageEntity": {
    "action": "Save",
    "entityId": "7348177",
    "entityType": "Track",
    "nonce": "0x890eb3aaf9106948d7306b35657c7aa69e7e1e0c1d7df1097d416c497bccaad8",
    "signature": "0xa3e11e4d8961842eb5c4e6ffcc756d2a12245c342fbfe66ed911d0ab63aa21b52875e40c47e11efe0381bc18b6a359b68d9e364d80895605c91cae8672041b921b",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}