{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x6741cf3d7a38d5eaa8be8c0239e23b68f53bd86b78ac4cf9d9a79ce927cfe9ee",
    "signature": "0x547d11bed7c705c504fb608ea183560a0f9c92c7f85f197faa22d288e0c8db5c5f979f111254c63371a7c6b497637e1e3ba07d696dfd6b51beff84b7130acec41b",
    "signer": "0xF51BBf2D093bbC94555bc2299Ae53Ce8F7963374",
    "userId": "38277"
  }
}