{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "864400174",
    "entityType": "User",
    "nonce": "0xef6664d741e8252f50182d3cfba47cd9ee74d44b5031e0dce38644c251f60905",
    "signature": "0xf22ba1547e188e4a3643530bb51dacdd6611869811b19477cafe6e16c80e74ba0fda5c947376cebde4fdd1258ee961b5441b53020e648156a112be01e1f060621b",
    "signer": "0x2acBF90b188BEa0e543bF348864E8a02E3814819",
    "userId": "969601314"
  }
}