{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "193642",
    "entityType": "User",
    "nonce": "0x2fabaac6496419c0a153bb629e1cffb1869a8f112e2c35aa98a6dac8a116aa0e",
    "signature": "0xb1c908b545df79728a73e750708385b2ff4b47382dbb96e27c4b0ffe5f67d002569d47c8a6946129057ebfe7bd95a9d8d59d9d2721cced3d9b37b2c07cbaaa7a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}