{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1150e17217463a39a43a2c4af5a4be2e9f71aba996efaf275b960a594b17dc9e",
    "signature": "0x7b98fcc2c76507ef83c47bbf831b76dd868c01621d28f82bb4c5e920ec5dde064841ef414a1627576ed20a196446d30ae0b3c898c46fffa27ebb577d20e780dd1c",
    "signer": "0xa334Eb01413ADAa287901266C48515fC4FddA8Ea",
    "userId": "210821345"
  }
}