{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "347606",
    "entityType": "User",
    "nonce": "0x9f44a29d1bb7c55af7d78383031be3cf305a049def75cceef8926ab6dfbd2bf6",
    "signature": "0x6ca7aee7a8dccb3123fe8b85f8cb00d2c92f198a893c1c24fa7bcb9f6ea102dc7e0fded48d8ad9621872f624bb8b78b28e96fea241ed050cb05c1882b7eb8f2c1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}