{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307756",
    "entityType": "User",
    "nonce": "0x9f1e04aa65e3fa5015c18d583ddb67af61785130c63afbcd093b91c50543b801",
    "signature": "0x5a2e04945ff9eee55270c4347c966e1d70ffeae0148b23250635c84c2f3ef713397403f57be0489feba60fffb072339c4268422b54d281ae4e78f30f83a681ad1c",
    "signer": "0x3731d7Ae56BB1D34C65FE26AF2C4CC1FeA87B8D1",
    "userId": "226031618"
  }
}