{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "52309",
    "entityType": "User",
    "nonce": "0xff1572eb793f74f3fda03a895e61a802b9d9fc83b616c100deead93e46c8e6bb",
    "signature": "0xde762784609609788f916d18559b28ff69459849c1ac5ba738722ea2b4680b862ac42dbf024b830fb6054bf59b6cb55bccbf2d0444d7909d0b44ed411128bb661c",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}