{
  "manageEntity": {
    "action": "Save",
    "entityId": "292366118",
    "entityType": "Track",
    "nonce": "0xcf59fae8a6f18ca3ad360e0df164a13438a078006ef64c2572f7c95fc0516258",
    "signature": "0x5473fb30b88b487b8bc14744a008a8623f73c8985d7b8eeb166a77bd7b1ddc4f0c4b7641822194599c0e905bc4f65a2487366c7b7aed897d2e28efb0565f9ffa1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}