{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0454a89bdd72258e45660e2d584d9431181d8bbba0222522fa3781f380863624",
    "signature": "0x63e36d29fa81919215f36d8058d1eb5ce3d4fe84f15e869f3606869cd3fb93c51e2f2c1189506f9faea8bd2e5fdb102f9e0ef85f608eb2f6359f1ab77a88bcd21c",
    "signer": "0x3E30Acb44666635Da39c4B71248bbDc6892384D8",
    "userId": "230491530"
  }
}