{
  "manageEntity": {
    "action": "Save",
    "entityId": "870475676",
    "entityType": "Track",
    "nonce": "0x24cf1dc64667bd45ba60bf476d625fda25a3e302c0ad4f99f53876e001457aa3",
    "signature": "0x182ad0015ece64e544abc3d715848eda84419f207d8dc84db6aa0b12d983a57575a8cd244323263010e83209854c7b29ea8bf300cf31656459eae55a2370f1251c",
    "signer": "0xa22176a11BF6703EFe39D488aA7cC06aa781C44A",
    "userId": "633924738"
  }
}