{
  "manageEntity": {
    "action": "Save",
    "entityId": "1823174697",
    "entityType": "Track",
    "nonce": "0x46369f13010f42f0cfd36a4a84c6dd7edec0fc7bf1dec82d81ce80e90a21630b",
    "signature": "0x6c49af0d97e25ae7885d21a2e216ac7e9cec3ca35b620bd5d020c65c7b9c843d7f5ed64657530afd50ea97146a1356f2cd0f9af05375e0eb6842b027ea2c2a4a1c",
    "signer": "0x97eAfE883FbF33a8b75f6f37440caFE5CC452d3f",
    "userId": "849776474"
  }
}