{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15018",
    "entityType": "User",
    "nonce": "0x05e1ec34938dc798b4e5fa15377e9798f7436ebe982bfe51a16d40e686f8207b",
    "signature": "0xf5b133482425753d51e3f2acdc04c7c4916d4eb74b9fd520de9131f48dfe17d67de5d9bf9db73203779df7c53024e4c6d830c8bed50f8040a60f3429489b65541b",
    "signer": "0xeB3722370f97AcF99B1f9828d23CBf04dA3cfFfE",
    "userId": "923876597"
  }
}