{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8257d45e28b739be1c0c1a9ea00031c71b96798c9954855316c87b2e8169a896",
    "signature": "0x333116e52a4f55d3de03943bd98abe7677c3a5b44c84c6293268975fd2a63efb755d42d33688d3568c0a9610ee203d95632b1b2adea71057d4bb6b18e02279751b",
    "signer": "0x644fF4B4D4582FA06F98090ee11a884870093ACA",
    "userId": "575648795"
  }
}