{
"manageEntity": {
"action": "Save",
"entityId": "2045541822",
"entityType": "Track",
"nonce": "1793499118017721168",
"signature": "0xcae2b2fa4884596131895559a3f1de2e7f729a27d27423a0322c18c38021105133a234ad093923b53eaac015264661a432d64f5c6fd6f55e926097ec505e191f1c",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}