{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50936",
    "entityType": "User",
    "nonce": "0xe4648e3b8644d5d14c99d9e183d87ec5ff42dccd89f5b962965a3e835c825814",
    "signature": "0x78ba6db844a98fd17e0aa35c3bf231c2fb7bcb2f3a6465c9bae850c5e49b533b187e5c3c253812eda061b132e00c8fc606c0842a9974bf7aa99afb621bbb31e71c",
    "signer": "0xE9B9EEdDb579478834256Bd35E42d09cfb754b1d",
    "userId": "281227"
  }
}