{
  "manageEntity": {
    "action": "Save",
    "entityId": "107775027",
    "entityType": "Track",
    "nonce": "0xe70f3b0407288656d1cae7981254dff90fe59297acb802fa4d46b44f1f6345b9",
    "signature": "0x238ebbe2f33178e7068cf73978bb7b0b790d2b85687688d6b292296c79f705ee369dbc7729e1e5f7acf4053dce5e16b34d328432e8f69d0a7e395fd93aa541561c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}