{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "469973",
    "entityType": "User",
    "nonce": "0x5315172c54424a1a810b82a80e2f4ed1507e628a65f44f823720da1c80bd77ca",
    "signature": "0xb045c3fbef3883013ebbc0a3fc7e8032d519cfbbdd9354ccc572ce8e5eda149619338dbf1cc9e17d5f7b4a03d922c220baebeb5e90026dad793fd31f21510c231b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}