{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "480867",
    "entityType": "User",
    "nonce": "0x3dc20dee0df151ec347d13a779cd1d676b535bffbe7a261fc579ecf46778a13c",
    "signature": "0x762ed07ea06ec543f6a35f3802b77d4bbd827b0ebd4626dcd19d4b39f3f9a3e17a038a8b6f576e12557d8edf3e848b32269543e9cf5c0626329be9720606bbbb1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}