{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "575845728",
    "entityType": "User",
    "nonce": "0xdd5b10a7a663f0e25c352e0591610c152cd56682cd40c7b360f679674ae84f30",
    "signature": "0x541025ffa4684e0997b8daa50514192008174140465a9ec8f3a16f7366a29d4277911d4b9bb353a5991038a0d0b90ce47009cf28c182d154cecaa2905a0f3e881c",
    "signer": "0xF40Be525727aa96Cf61609f0A493d9E677f73a33",
    "userId": "159460377"
  }
}