{
  "manageEntity": {
    "action": "Save",
    "entityId": "652709349",
    "entityType": "Track",
    "nonce": "0x95f965033fdf38787aecf6a9bdcf9a5e07820043e7865da8a8e32d97f571463e",
    "signature": "0xf4928dc40f29fbc473a1df6fb90a32ef1d87738f5cb251b25c8e715c8c23c234592fc07ab52c32b25c5212a0b57c1faf3fbcd696016885cf2121a3ac8fb922411c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}