{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1139109",
    "entityType": "User",
    "nonce": "0xc4ae3716ed2b8710b542a08b5da4a493b09b3484a22789044ff2f228ea721c0f",
    "signature": "0x8494245e1661dc728ed18a87d0ba84a4c2cff3b716667dd08301627580bead4946f3d59646a82e0653fc1cb4c9ccf2a5e743919e6a5c31059a45480a1f2b6d7f1b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}