{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17491",
    "entityType": "User",
    "nonce": "0xa49e9cc50b437ae891b6da2b2ebf169af91120bc9cca4fb0a9ea776c155fd4f1",
    "signature": "0x9981ad320aeb4eb0d73dc04b75279460528f4b54748ea616a6181f621b181ef14a5b8ce103fe02f3a6893e5cf7911c6ea729eea85e0233b4c7dfbf28b4186bc91c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}