{
"manageEntity": {
"action": "Save",
"entityId": "132495378",
"entityType": "Track",
"nonce": "0x498e18d5ab0ceedfa7ba3000ceb5b8b995293eb6e387ecfead027c5351ec4888",
"signature": "0xc94d040a0be935f26de3b67331423a77c0beecf3e4bf7a76a12c279177f2ce7571d33920c209119c241648f9c49b4c4c849562348f4111ebe22796e36e5014de1c",
"signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
"userId": "162770660"
}
}