{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "490478463",
    "entityType": "User",
    "nonce": "0x92b6506bfa9e963b70e6d0193b261a889b9c8f82b6006a4bdf7f5166678f118a",
    "signature": "0x110ea3837de0f1650ee1761e7da59a0f8aa43b78c50aaaf840bf81c059b3e050523d3d541b1faace2ba969c5406165df77b4894fe0d6e7a2a7bd4625414f0c811b",
    "signer": "0x344Cc6Cd6326A3Fc46e2f789e02111af483Df673",
    "userId": "980331"
  }
}