{
"manageEntity": {
"action": "Save",
"entityId": "856487872",
"entityType": "Track",
"nonce": "0x16e128ba441f04402716a8fee441437aa3d9fc9f44edd2b1bf27d2dda8aa1721",
"signature": "0x0332a5c6058d24efe447db6a46800483f98fb0f50dd60026ee5935305bd56c20592adcfbf6d3862fc2a44b62a7c2bf7785055636d34cb5d666d8be16bc98b54c1b",
"signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
"userId": "571117272"
}
}