{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "669190",
    "entityType": "User",
    "nonce": "0x9eb39c37ae5a14ad0ecc9e15a4bd44cac2ab856d34e37a30a72772bf258ffa53",
    "signature": "0x8094c5277a6b85eb5a5dbf42bec69df66ff030acd4b1b8802fc67f19068a487f785a13255ecc3ff22d6f10d9465ab9d10b74a7c5bbfedb7e1cecfb2e51bcab7f1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}