{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c667574efa748c5acf6a15d5d3394724e2d082436be0a2e10e882eb9adfb6d9",
    "signature": "0x47e38cdab23a9d517fd88adaf80c823af36c835ff4864651cf91d7fa77a85be560a088995fc0ae7973984f3251dcb1539f0590df98832236a8b54cc4a4faa9411b",
    "signer": "0x973D027d08467999f96f13DE0654099070B83a03",
    "userId": "732183916"
  }
}