{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755263",
    "entityType": "User",
    "nonce": "0x74544c50076b1f6fa25d883074c245c9825fc7c640975530260c0c736d95af88",
    "signature": "0x5019272736473db2ea0b6418c58fee96d787272472979a87b147f7eae425ef7735cae9b880f7086ec831414e9508174c8d1d8dc3bbe390272d1a609a849919c61b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}