{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0x38d09a456e2ffe3abf120fd2af14371df1d4230cfbf89c596d1c393a194d7376",
    "signature": "0xce5b1550162e8b810d9280e76259e22dd16e3a3f1752302a968e59aa4f8ddb3326e6869e2f23c5715795116f70cec91cef881f1a10d983c98b2f12dda806c07d1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}