{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xea81f3b048731ece33787a7ea9d6940cd3b985f557745caf06b0e8605c64540a",
    "signature": "0xda965047c5126d1c5c9d7e674e8e93d2768f47bf5d9c487f42c08952d465eb2908a6f2f1cfe6d9bd706382878766f20b99a736db51f2c79f206974a0146a47861b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}