{
  "manageEntity": {
    "action": "Save",
    "entityId": "1070004",
    "entityType": "Track",
    "nonce": "0xb055aa5ffee8173e8ff3f890dacac55b2059cf451d0568874a66424f8c92e282",
    "signature": "0x8a95c06200fd1256984b585946e66eb1c7dc022212963663156ba25f825d4df756afb66bb79389392076f96f0c4f99e1e43fee754322a978494829c6e0cb4a9e1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}