{
  "manageEntity": {
    "action": "Save",
    "entityId": "1848766347",
    "entityType": "Track",
    "nonce": "0x0cb600efaff785bb09e62b9564b90f3c75eefb1471dcf328e42c8504c1cc7529",
    "signature": "0xabd1c00c35de821640a3f5c51942b3d4bc27a9b25f3041159257baf023abc02173ec5813fdd50aede3e6146c2dfe947a2d69bcc196d3a8378a8fc8f289f023821c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}