{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "336906",
    "entityType": "User",
    "nonce": "0xdf1ffaf87a2346b4c152918201f9efdd65b6ba44f24701c37fc207e04c3075be",
    "signature": "0x5e3164eb87d0b1921d64da0ddf7d5b1b48c94fe4aa1d495a35282ef93f5e37781601af238eb3d7af31d9e9ab5ea82a18a29987d0964b85c75303af02b1f4b8e51b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}