{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "809803",
    "entityType": "User",
    "nonce": "0x326bfe561a17923575b79b9fb17c35fa40dd7b79993b619cf82a3ab877ff1e3b",
    "signature": "0xc3f71f047d5b9c1c2d77e5f5a449850776a01cfdaf00510a684ea0cb13b5cca020f1ecb088d35885f15b5227bb1c6b9c616ccf4a7627776606ee9c38996079dd1c",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}