{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x01c03500e13ddada391711aaa2d246481f4cce2a2b9fd48501ea789017bc3cba",
    "signature": "0x0c687688a2b34441ffbbdaa3226c8ca11d3a8e365ff63c64b9e70a5b6315f71e2ed317d42fae7755aadb58f3d2665412848097a34e8214fd8a1da6e7b76456a01b",
    "signer": "0x90A9206Df4cA22A1ad24bfB7F1b639Aaa812Ac58",
    "userId": "266782887"
  }
}