{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "779540779",
    "entityType": "User",
    "nonce": "0x6ab48117946c51d13ef5051239dbb1c79946e38c5917b2da41b084a504d8c0f2",
    "signature": "0x3d3b829455517486f8859883aacc28e9ced9785401ff8e116f32be1b3020566669c49491d814d9352d239866cad20544b11fcfcd203fffb0951d509833e211c61c",
    "signer": "0x2F87bb373089af6C75e3362077A0E52A4779f72c",
    "userId": "582715056"
  }
}