{
  "manageEntity": {
    "action": "Save",
    "entityId": "1289657678",
    "entityType": "Track",
    "nonce": "0xea22c5dc4df285c2096cff7b9df74937e922ac48b094d278e10cceeaf082029d",
    "signature": "0xcc385327f133bd69ed218f222343b8a6c0ee7b0f72662e0b639220f50b44336232853e77fd96c0792c922aad94b34582b8dd21d5c29883fe533385f2094ddf781b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}