{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "19702",
    "entityType": "User",
    "nonce": "0x231b2334718a6f31931cc489aa0c60dda8bf3b650bacfc934d5fbdfde1a24eca",
    "signature": "0x697c15980e9faf0ff2fc14abc7516bc8a108d2ae53bad13f7c1cb14761b7093160f8a29cae92603328eb6c1049e32d0ada4941f5ea0ec49e7e10161c69facf421b",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}