{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "844910",
    "entityType": "User",
    "nonce": "0x6fd9406deb52a34ec70b01a3fcf8cb47ee69dbbbdc5ab6d520009e70862e93d5",
    "signature": "0x36c8d7739d217fd4b72b396606194bd9390e8002cdc62c47397e134018445b1a321e4b0490b78d98a4c1e5d855d95698202e0005ae550052f5d7070f8c2201181c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}