{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x9ada9f9e4e9067d5443bdedbf12ee93f2587e72b2efd38e1dfe7efa03a4edd2a",
    "signature": "0x1438a00eb39555cfa5a78c2a5ac4712950901aa056ca67a9e8733f3f7d2c671c64322a1cea40d2f025e795b023c0edba30176561e1e7e91d65c1ebb0d1f5d4541b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}