{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "677737335",
    "entityType": "User",
    "nonce": "0x0278ded1185c765ae2fdd27e566a77e6ae712c0efcefe0bde88953ef49d6ff35",
    "signature": "0x77a8452ac972257b4ad10b729dcc4c07ca21045fec1fafe83f049ffcaf54db9c7e22302e0acd74da23ea9a761b26fbc3aee4c67aa59546aa2168e7d58bc3c4871b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}