{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "193889654",
    "entityType": "User",
    "nonce": "0x8fbb092500e26a13cb876832b98671984ef0a0a00f5e18e06a19425da339ce08",
    "signature": "0x931a77e172129b036485d5716c5dc0ffd987806ff0f1a837b1d124489f68a78040610a26f5655a0fa28cb732b4c68ec35016425e262919b629e6e45c0e39c19f1b",
    "signer": "0x8c83aB7F6a7f7A93A7CeFeF6E16b212bA43529f5",
    "userId": "549340592"
  }
}