{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348429",
    "entityType": "User",
    "nonce": "0x7f51b45ffc3158f73a92b463b4b599cd4629cfe45fff6aa954dffdd7d4b9a92f",
    "signature": "0x5410099ce57d2ef8b49aaf68eeb637ffbe49f8fedde2ff1946e787b496eb0af04243845e30cdcdc5ee061a2d936de5d7bbb45365a3ae3c2a40c5641995dc121a1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}