{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342118",
    "entityType": "User",
    "nonce": "0x430bfe77be5f2caf5b3bc3e85c998484fa87816989fc68efa5779d8257a09f5c",
    "signature": "0x473be9d78d40bc4e17eebebeb9a57c4d452f3721e3377c806937b9647ab0c8cf236459fd622ce4c77a60dd2723489343b099f859e86cc16e0fb625b953592a971b",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}