{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306948669",
    "entityType": "User",
    "nonce": "0x0637a126366ca4586d5f26d4333214f834c0943c0b5a65a15e8fcfce3b664ae6",
    "signature": "0xf04e2a149357fe69a10fc9d6384ce6bd25529e8eccfdb38e2cb15a06749541f73d5b65d778c206a94420275dcd9f70913b8fc507d3c6726412b61cffe62217a31b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}