{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257683",
    "entityType": "User",
    "nonce": "0xe02b73df29d5e2d14617a9591486143ceca99fb12f8dae189a9de76411aa2f6e",
    "signature": "0x939c8311b404268a99dcfd168af31d043b3a4ed83d23c7e8339e507c7cbcf87615636318e30b2b90709c8eaf5ba66c4cdbd6643a73e2c2bbe8040c3649f957f11b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}