{
  "manageEntity": {
    "action": "Save",
    "entityId": "416424765",
    "entityType": "Track",
    "nonce": "0xc797dd82f7df7ccf10fc27ca1a36619a8b205d1011c5860ea3b83a42e3b04aa7",
    "signature": "0x15505b4ee9f3c7841c2045e031d9d35725f01f8122cb8d1d3b5315726aa41d130d9bd482f78a1458032498e3f192fdeda0e1efb9cd755edb3e1ea2f85ef599b61c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}