{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb54424d84f83902922d91e8d490a794d997e9e9c27180a8f5e639be0e508fe9b",
    "signature": "0x15323a4c4abcb68dc3d4ace05e5863ba3f7c3bb2dbcac802d855b0d61024de3e2142e4125733ee37a9e5efc4ea56d6206e1150cfd4510648e7a02dd3d8c436521c",
    "signer": "0x46FCeb3B4CC66d5AA2A495C482D103Bf09Ef8B43",
    "userId": "577430813"
  }
}