{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2f885d05b88d540438ca827f3e06e9e3ee82be9537defd58bee2f2a701fbc8d6",
    "signature": "0x1f4987c0593150a2154452a402f7ea1caf33a4057f63432d1996c35653596b7421ef97464c9be0e12cdae61cb494ccc5b162c330b93d8cfc80a43c128cdcbe5a1b",
    "signer": "0x20C29a756e588fC89a1A5cfe6E8506681c6Db30a",
    "userId": "670354464"
  }
}