{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1ec0952b54911e6f81e3f2af156c1aff8e2641f7f8cfc25ad74f2d183cd0bd86",
    "signature": "0xee14db18117079922d59873df9bd2896725dd26ae854c413185615e440602cf31a27a6401fdae8eb53f5bf4cb966941b48638b71684c1feba79a44e8c11982501b",
    "signer": "0x889BB74c17cd99f2f36F745FD25be89a32E568F9",
    "userId": "434987572"
  }
}