{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x08c00bea6ac166a64ad36de3e6e63f94cf010e5da0ff2b58d41666c550505854",
    "signature": "0x601b510236450a3e113016f326c0ec4f42d48ff37f2166fbf32971c1cfb4e37b5088852b61ac925dcc20d4f9d50fd5c3f7d2663c123fcbd652702597055c87741b",
    "signer": "0xcE1000874CF7A0a7b16c35A55F7D6f10C607A868",
    "userId": "442277469"
  }
}