{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc6151562472a53813f1f2fe3bfc7c549ab1386c8e9d2a9c7b1bc58c2fcc82a6c",
    "signature": "0xeff0f3a504c7b547f8e23551d15d3b3ba7174a873043aee2b56b62fb9abc0a3e117f657725a1c4e93cafa10eedf18f44631402b8633741dcf2e2518676eabf111b",
    "signer": "0xa738EEE0069867D724b136d8DFc260e3f505EDad",
    "userId": "337739637"
  }
}