{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb750c88a2d4aa3e1b5a060d1482981508b55bee3186c95d8e34bd97a36be0e1b",
    "signature": "0xe8446696454541737f2c7d6bdc9fa9703944c809b0ac974cd9073a233e5f858f6b94386539edbff5ba4f4afae57002f37abb5d514fb0c08873cdee8124b176ab1b",
    "signer": "0xcd7ae26fdB24C80F4A22659e32bf6816E8bC0b29",
    "userId": "973322561"
  }
}