{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf735408f03955e7698238bad3ce519cbdb9f78427656e119b60a574afddf4173",
    "signature": "0xe4150e28a252c9121582421bb3b8a496e7975a9655fc90d5da42c84efb3f4a5b01ad39c65d60e669b82f187ebfe8cd3bb3777ee9e82a80e624339845bb3bed651b",
    "signer": "0xe1C88e893DDB47768c2405cC3D937af34112B24E",
    "userId": "993570197"
  }
}