{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "194774",
    "entityType": "User",
    "nonce": "0xa82621cc7e1233b8a48972c9f0ae113eab4fa060fa16400edfdd6f41f7c6843b",
    "signature": "0x78b1c7fc1e4ed6c4f14ccd85f322ce129f96d100e819f41703a05db1010c19714e90312f5589ea3f855f12e423f7de21c1c41587587eec3d8f9e0a0bb8e8bfdc1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}