{
  "manageEntity": {
    "action": "Save",
    "entityId": "1006215",
    "entityType": "Track",
    "nonce": "0xf8b8ab067ba8d259327d3d1196b86818b7cb10d6b2608fcf72e1c6812c114e33",
    "signature": "0x15426115c1e6ec2c9b0fec587004b4d692927119271b736c8da529b8031c678c2447f623cb4ad115927524c18b3ecdab56c2e8215ed4b93befde160c811f26981b",
    "signer": "0x15B9643abE09bd37C52a5BD1dCF938B05b06cBFB",
    "userId": "370091516"
  }
}