{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8819",
    "entityType": "User",
    "nonce": "0x699e8f58eaac0ab3e298338f5bd844a0f340a839464389f7876db827999d455f",
    "signature": "0x3cdca6b49311798a8345480989731720ac0cd6ddd4bd0f3215eb317dbb7bcb2454d5475f4cf214398377ca3a52b1b82c03779b6cf17c4dcadb3c6c358b73a17d1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}