{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319895",
    "entityType": "User",
    "nonce": "0xf717e5ee27dc4f2dc3f380bd52ccf2f2c4a340058953bfbc1d7fb372ce9e0cad",
    "signature": "0x253bb8c2efa96e376481908d0a34dd66c041d6d8d0a4d0f34bb1d28707afa485326842ab798d9e1552e1e33f96e2036e685689be3a66daa8bbb18e8c4f4f46051b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}