{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcb4f734aa9a1339502ccc8d15769f4c368819389296acb8a4b053423ac5a5b3a",
    "signature": "0xdb33b1df3245da4e13623bf23a6bf792400a7fa1e576fed5d2e70e3a84a013dd1998692d07ab1a766a226b5a0bc0d18687d0a758d924e3e00dd6f66f799b55cd1c",
    "signer": "0x94D178A9075d0Bf3272d871eeD0c0C383601BaBe",
    "userId": "483516742"
  }
}