{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "764650114",
    "entityType": "User",
    "nonce": "0x2bfc2ae645c1546f56c9e43d529f3ffab25d931973d6e867595df2d5235c4cb3",
    "signature": "0x472be07641af9c2a99043b1fae28805b7e145997619ceaeae605444bdc0e79b005e10038e406bb9f69c2af40276f7a32ccdc42283a36babeacde48423511f1f51c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}