{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcb4e08fa8c597f8c469292567d735e064926e3841b2b8b9eae8055b625bca4ff",
    "signature": "0x1f341cd9b6f78d549db161d832053432262e09e6c092072e0be37b1e6544a7c3204d194ac8020d1f1cff7e6e6e959ad37ba7cfad87a4fc47d6c4b9014c7ac12f1b",
    "signer": "0x464214f6c35114923EB54E20bdcb2c8Fe68E5EDB",
    "userId": "857082800"
  }
}