{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "146510",
    "entityType": "User",
    "nonce": "0xd4e8520db8585f605ed12c2d58eaefb942a4b2b28096f879f0dd9cf1344f57fd",
    "signature": "0x87db6d964c5fe12d18a3f207716773f14de9d37bcbcd1c78696090a79025758f511d6eb4f8dec1a7371bfa1584cdd860575fa0a72342f8249393f47858cf566a1c",
    "signer": "0x8aC82278ECCcB07F5CD48853c1759c104aD8D7f7",
    "userId": "100670519"
  }
}