{
  "manageEntity": {
    "action": "Save",
    "entityId": "1131767",
    "entityType": "Track",
    "nonce": "0x51eebddeac7bda39d9ee0f2ceca6e4af6334ad3f6467fefefd483cad4607e2b1",
    "signature": "0x0bba20946cb9d1515f8cfca3f696b7d115c6494654cf183ccc5516f5f7131c5455e6aae1684c0a2adc6745e30f8f7adb61594c2caf7d82a22f3884a82813b5b31c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}