{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "151445",
    "entityType": "User",
    "nonce": "0x63e7e02fc470645eee2fb4b8a624afb1812a52e741a57b0225627188f4c29e1c",
    "signature": "0x23b4e25f2ee10a06cc944af07a4c72f0a88e454dc68e5ae54d6ca1a1c4a39a195fdc57ee408c212da88d3b44574792610b6551f5660fd9715ba02bcfe51da59b1c",
    "signer": "0xeC1219421eB7c3f9Ae2846E885f45BDb4509ccF8",
    "userId": "892020777"
  }
}