{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x475432d89d6557490e2f61418bef02353b83222f27b360b6f67e229c9ea89cd8",
    "signature": "0x7879f8e07f00acfd8c973ef5d541e5d542bea92cb77e29fadb026b351d86ab0b27ecaf44fb3f7be765d0a2faadadfd0443fcf0b1c6b56dc7af10df6167fcfd161b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}