{
  "manageEntity": {
    "action": "Save",
    "entityId": "677323635",
    "entityType": "Track",
    "nonce": "0xcd2e5f0139008aa733ae5953bc015074e6c4085fe8dac693080bca0b13f62b38",
    "signature": "0x47be6d0b03b87ad1c3812d4d1bad033dded5439d83fe56f25f96fcc295f00ca72f838252f08475cf765281127df3be2bbc472787dfd7dd6583ea48dd83ab763f1c",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "20"
  }
}