{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "344575",
    "entityType": "User",
    "nonce": "0xba02275dcdd10e132575988a51a809f6ad2306c826392538bb5e5d2e5b08756a",
    "signature": "0xcca0ccd76d23a3f2dd24de6cd6c64e770bc2bd0d2b291d97007d39e920dbfa4c7416b9ba62ab27b2b089605197d6396bcc7f2f9e472d9f1d71885f186823621d1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}