{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645202292",
    "entityType": "User",
    "nonce": "0x7ee7cab14a1325c1ebd36f3bb8240cdafd41b1945b1fcfff247a0606960db991",
    "signature": "0x334123fc9f3a1aa83e41ab3254ef8f76866c24132066a8342ca2f0aa2d32fba96e38aed4ad22e2fa569db6dc49941b00fb5dad226a22dd7c0bcbe9c5f0861be61c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}