{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "907197699",
    "entityType": "User",
    "nonce": "0xf8ba1516aa3952708fdeef5b6761873e4bbed634e26254335e14f528f80e4d27",
    "signature": "0x1c42d4f8ca6c725ed262ae7e19509636c04f60498f99ecca5f32c438e0f7a6a308d5ce49e1ae53414a8fa09df70b5510dd891f2c5c9d05ae8b0e391b47dd711e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}