{
  "manageEntity": {
    "action": "Save",
    "entityId": "326983128",
    "entityType": "Track",
    "nonce": "0x5d867b9a78b71c191305b2bd2adfc3b758710e2d8ba54c25017934d38ac07352",
    "signature": "0xd1d5ef163cdd763c7ff29ac87517bc2860df18af4fa7ac589aab4863339a3c4b0c0112e67de82be9e58d8d39917fa4934177ca79ef4c03e6f23b3806c51ba3781c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}