{
  "manageEntity": {
    "action": "Save",
    "entityId": "276680491",
    "entityType": "Track",
    "nonce": "0xb2247b2cab12f56cb850c27eb196813233e0e53e136b2763a0a4c2556c99af32",
    "signature": "0x1a57f5b70ee4fa38340960e02fc8196b446cc17398f4f32ac7cdb08ad68dcfad701d94d9e539554d27811a8c54e8b6b55e0f3891a7e6d1b663e316f912b51f2b1c",
    "signer": "0x9461A9b4Cc94c89F432302D00E129a7bF62D2a16",
    "userId": "744301658"
  }
}