{
  "manageEntity": {
    "action": "Save",
    "entityId": "1755952315",
    "entityType": "Track",
    "nonce": "0xe5efe831f540f72847f8964617e55f953d403b7d19ccfd5d6291b7e8406aa8c6",
    "signature": "0x0acbfc32c645d2dd7091b93196f39d32dc1764b4c372d12307e471664572057d0e74e2a17a942a412bce04bec7a42888463e428a649130acc4d2a067bc6f4c031b",
    "signer": "0xc1C84e5C06F7dc5824672906AC6E51CDfeb90aeA",
    "userId": "447798047"
  }
}