{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059610",
    "entityType": "Track",
    "nonce": "0x4ea5bf6081954266ca6d2d3c7fc7532eddd1869a2e159e18131955dec7d3bb71",
    "signature": "0x572b1ea8fc2a877abb5b3cf85584573ec8ce51379e7e3a87d820aa527027cc333a9069a418371a542d21cdb6b12784077bcff3356b4223e170fed80937ff8f091c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}