{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "900325196",
    "entityType": "User",
    "nonce": "0xe103ab3baba7add0af3e3da996b24c60c650b3ca7e2e39b6a27b39701426924d",
    "signature": "0x725489b4d2f3877176db828689f372bf9a7ef4c903485b84e4f7978cd493dc4b59ac9350eab3193e5bbab4447d944b8a82c65acd9e6e127b5b119e3e48328de71b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}