{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "349476643",
    "entityType": "User",
    "nonce": "0x8a48b2a0232b94122ea1d1abaf4a11caff51ef2eb7c1680ae2d64664d25d630d",
    "signature": "0x2e7b442f264e3b7a1f26ffc74c60cc2e137dbafd55bc4d20d472c90f5165a46b285d1de81b12e29bd1e8012da8ef43f298016acc201ea5da506b3d5419abd2ca1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}