{
  "manageEntity": {
    "action": "Save",
    "entityId": "1092361896",
    "entityType": "Track",
    "nonce": "0xa0ba954106babd8bcf121cf63480736978e395b0ad3cfbcab7bc3de3e8396d3d",
    "signature": "0x143b84a3dbf04b5a3c3d0cbaba7ae031b7d7a0a54f3fe46283a62b9b86c6afc63a81830d38b930c8dd8d76edf6c8332bc566e724ce8aee16af6eebc0f99ffa2d1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}