{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6ac5dc93fc1d1f6eb3347fba2f11af924247d97c8990615450cb264df8903e4e",
    "signature": "0xecc50cf968b86ee188d2fa88f68ab9bbd5e8751b583fff73ccae45a82201032649c37001d78f10552a7f8cf263992676f061ec3f47d54280905ab5ecd46eadf61b",
    "signer": "0x81d7C61C16Ab08c7AC053CC6cF85F82762112d27",
    "userId": "858893651"
  }
}