{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "235256666",
    "entityType": "User",
    "nonce": "0x8a03c136d7e5e86d31689aa92affbb4b8c0e7bdb7e48370eccd49700a29a5e90",
    "signature": "0x8679d3376dedabaaa4877a14725ce5d45c0e1d1704eb069319eafaeb4c8877633fd53678f5ce22ee698765ada8ba0d3cc0fd7feb2ebdd5046c8c1c2a635e7f421c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}