{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54520",
    "entityType": "User",
    "nonce": "0x16e34a78067245707412f1de5bc83ebcd45ffa085268fb30059e97bed761cff0",
    "signature": "0x1a9a55e4fc6345f57432d1a0f9b1bd79ae0c11b617439522a363ae56a7b0559d57b65e8950507f726cf7eaed1653518cf10975d01077d504cb7360185838b7da1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}