{
  "manageEntity": {
    "action": "Save",
    "entityId": "317340",
    "entityType": "Track",
    "nonce": "0x64198389be1e6438ec66cb7531d75d1875b9da5a56a956c3de55494722af230e",
    "signature": "0x1101f0d66038a9f9e83c7a2671ff2415f802f6684f28effdfeb01c6ec501ac441562a5e00cfb12543b7cffd6b07ac57767d9107c2a739a41707805db10e152e81b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}