{
  "manageEntity": {
    "action": "Save",
    "entityId": "1067860817",
    "entityType": "Track",
    "nonce": "0x161af9e8dd5ac25803b4da48e22c8d395f6b24e73a35b0faaa29ddcd7a0c9414",
    "signature": "0x15cede41aebd5bccaeb33e1e828ada5d62d019beb98d6d37865dd9a917455c505b00c19ebebe8ef7c91b8ebbde791a928d2f74d200644bb1896686fbbcab72ef1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}