{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xde297076e3a459071a2b5caea4775da4bb5b5d62993b6f40be27336205e39930",
    "signature": "0xf054164de46bd9f4579a588939ca1395b715c103893b511ecdc7ff9d307f9f836b8216ea14a2e19fee9d4071c0e97247f1a555cee5e384672c1d506b6e540a241b",
    "signer": "0x291e828e2a8d90cFE086D55C396029473A471377",
    "userId": "662476209"
  }
}