{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102143",
    "entityType": "User",
    "nonce": "0xa1dbb1f68d54532d79c22ef6415d33fe11433a61023418cac5405b6775de88d9",
    "signature": "0xcb5b8458a81a681ee2e77404bcf29b92ec693f0ded550ca997ba23f8845fa9232f9ad0e998355055d91ef60f5285e7bebae793d011187d9d3c1dd772545bf3321b",
    "signer": "0xc28F39d473d5C4cacc612630A8798a119D1Bb506",
    "userId": "901788935"
  }
}