{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707937",
    "entityType": "User",
    "nonce": "0x573b6ea60319cf8bb79e4bf5f0c714079a7a0fa25b017e77737cd379647d1721",
    "signature": "0xad7d107f92dbff60f15e92070e187fc0467a26d0df448c9be745c8b4e9aa89af05cb41ddcbac8f5cade4b2a0d6e7c9d76823542ec098b1fcfb4bc47b3604d5691c",
    "signer": "0x2d4E313C5C5BBeCd31f664627b0a91361e5D04D1",
    "userId": "106406"
  }
}