{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102563",
    "entityType": "User",
    "nonce": "0x6db5808bb115d3385a5641b7a68f3a55970a09ddff0c41154c69c4cbb446b734",
    "signature": "0x4e896e833cd28b8ec0f06bf970fab45b6c915b068a0c83d390c05b110011810a15257fa62e68244a1bcada8f127ca5e12eb69eac852f88466a6c23b85c419c931c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}