{
"manageEntity": {
"action": "Save",
"entityId": "875323663",
"entityType": "Track",
"nonce": "0x535ed2cd66f1b25772458f688c5a958ef649aeb38cdf4c976c8bea95af530f06",
"signature": "0xd346dccf59b3af87e8a493904d81ee0a2e9e331d2d9f71ea9ac9a25e757f0c283802db1298245524175eaace4204756356aa93df27360795a0ad10abda7c98aa1c",
"signer": "0xD967b68365738013c9197659aAb46EB73a488080",
"userId": "488430169"
}
}