{
  "manageEntity": {
    "action": "Save",
    "entityId": "2096111186",
    "entityType": "Track",
    "nonce": "0x3c108eb2bedf3d4ebea1ba6c570c96b648677afe7eea725e1f48efdd1746a196",
    "signature": "0xb95a4183f410fc79249138c4bc0973e26e5f3116e2350b8beaa52d7aa0f1c831461cfc6bc9d1b0d999e68e4f9e9bb09f2d28b2516fe88561fec0fb50974a52c21c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}