{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb55181583f8ecf13305c15cfbe1dcd459c36690415ae8e38ae07147e91efe930",
    "signature": "0x42d20fa681f095d522db1fc269adf7513d60015d25370ea04a3edae33f0eb4295bdf86dc438e22437fcc4db7304d45d5cebd0dd76182ac9781021e0944833dde1b",
    "signer": "0xE3D6e50d681C79be7e5eDbca5b53b413f955b78d",
    "userId": "422375588"
  }
}