{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x4801f0ce4598b4f5de2e5bfb588b5571e2762be733b8cb473f3789e08ae78d41",
    "signature": "0x619999d9842876f810478866ac6ff217cc5daa28a1f680988158aa4adccc9d811b4e974ff67f133b63407741c46955c30ac1373bf8c66477ca25ba38bac483181b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}