{
"manageEntity": {
"action": "Save",
"entityId": "1724269802",
"entityType": "Track",
"nonce": "0xc626ee2a6e02ab7ff1f5b4201ce275debbe666698331451ecddde6c20a23c418",
"signature": "0x9360dc0e79644bb1f5f506c8e1ef4a4e29882ed52c7e6dca84c9a485e4c64af9328f63e9c7896fa1a1d60c82e7c2e1b0d3690c3a64172bb3b529b878404ceccb1c",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}