{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xb829a933f5ae3e03c90b517e0b0afd307e032affe13aa2a90c231d63249b0e45",
    "signature": "0x0f011014a95d2ed8d6cf9d8c7b586945d0b73ce2d3c3278f6ef4396a5e5e3c37361d7216c9191a73573936c7a1929186f4056f9ab30d2310d769fd52a58cea9c1c",
    "signer": "0x222534475146193b99B68F2E3830ED2b44307C2D",
    "userId": "991417453"
  }
}