{
"manageEntity": {
"action": "Save",
"entityId": "1386960285",
"entityType": "Track",
"nonce": "0xa28a0e2b35f87ee8a4862c9da40039953ba71d80ca36dc1745ea2bb01fc0eda4",
"signature": "0x9821cd073d6dde1470949de2c18895179e7184b1927dc2c66f2db504745035857e3e380f59263c11bc86907ff0bb6d09c7c1b78168e389e40dbd80e751ef62a61c",
"signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
"userId": "486490947"
}
}