{
  "manageEntity": {
    "action": "Save",
    "entityId": "1089491115",
    "entityType": "Track",
    "nonce": "0xb33e010cd192d1625d400aeeb46ec89a166a9015562e76fbb806367db17f5e8c",
    "signature": "0xad81c88e35a051a789bf0c4888378a46ffa7520bc990cbe93d9f2c25ba1a8c7071f2ec958103b8cdcc844bcab087b30eab74d5a125064fa6284634fed587a7d11b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}