{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xb2452dc8b30a31a93f8aee5208d4fab408d4d542e3373a2a2fd06ec6a98ce054",
    "signature": "0x0d2b85839e10edde0566ff5d0d6d96db56b6287a04937d6a7b992c9e7eb002420ffa962b20628dcb61e976a465943e51aef0c0467620d32e16172eacaa269a841b",
    "signer": "0x5Af531A9cDF9747df40f57531227d70F1bdD2ed7",
    "userId": "511108744"
  }
}