{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137618",
    "entityType": "User",
    "nonce": "0x3eba042da04aa983639fc234dd995190c13b62163982282843aa127eff89aab2",
    "signature": "0x2ab850063645afd4f87385557b867ffe6c5af05a747cd5127cb76fe2916070a15a7965193ae4d161d40b7e0f88dae08f918d841c4d66877e29b04b54e40db16f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}