{
  "manageEntity": {
    "action": "Save",
    "entityId": "1049962514",
    "entityType": "Track",
    "nonce": "0x26cc63b450f348889a8e4a07a97d9cbee1fed353b5e12c05ada2bf1b6a95fbae",
    "signature": "0x5e535817ebac81351057d829181bea379ac682c1b3d06e39e031d17353490e95638297144638904488b9a1391582e4de12f528fecf62eabd7e3e2b3ab1987b0a1c",
    "signer": "0x27E191F0AEb8e1804719843eAB9d3b71344D3767",
    "userId": "164970034"
  }
}