{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x52746cd136aca55b3a77a2cdced9c9996b400b80831725e5a95f0b069dd890f1",
    "signature": "0x89dc9847baffc2d14a52bfacc366d324b74a1dd1fa9179242180220f650ddfb1674b70a2a05d0c2ee87c39152e2569006ae8148f765e4d251bcfe564c6ee01b41c",
    "signer": "0xB6Bf7407faF4C91Fb4B848F3e856D349E409814e",
    "userId": "210267161"
  }
}