{
  "manageEntity": {
    "action": "Save",
    "entityId": "697372081",
    "entityType": "Track",
    "nonce": "0x6b49b7ba3738c2ba19277a807d214cd82aa15855c3239f2d5c38379c323c1033",
    "signature": "0xbe4c299349e5f85bf7e1100e1373ebc2bdeb896d8f5877b798a08b7deea12b6c5b3b6033d686e7305ebeb6293ec951eb169d897fe96eaed8b0d24637c06d19dc1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}