{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "798837758",
    "entityType": "User",
    "nonce": "0x975bb7ed47aed6d32a0677a359d4713e4d2cb74daeae051d4efd6c43340f22e9",
    "signature": "0xfef343b1d04fda5eeeebddcd5a58baf888540251264f188a4ac35b019a49b5ac71a824480a50f21202a48e01307463555139b71f814113a572db494ca87799191b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}