{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x6a8a35f28f6943da4b258e00182351aed6147faf07de092f86ca0978dfc51b3a",
    "signature": "0xdef562b5aa2eacc9198c5a8f72e26f0c65cb0a814b5384033b18ba3b5a57258207d838749f044cdf24c05a20424af30eb644efc4fd7dfdca9e24a70e6c1eb1f01c",
    "signer": "0x29EEda1E7eF2d7C7B5dE243F5b7de53F1E2d23Ff",
    "userId": "817425333"
  }
}