{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x7540e206385a2e1144581ef01271db1de4a87025deea2250dce370835b57a994",
    "signature": "0xa33e4b6dde2ab545253b8282589187560a7491cc4662e5ab6f98c7da0a7e3fd235fac3d58912a1c71269267045568ed8ea045ec267f46799db3b9a7ce8b415631b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}