{
"manageEntity": {
"action": "Save",
"entityId": "1979531992",
"entityType": "Track",
"nonce": "0xa9295830a7b81ac6efa06015dc98c9ba4b12b07f6ac853f71613c67d0ef6a945",
"signature": "0x1f0d01c279529e83c4a1f0fd069ddf5ccbde54c396ae650a2a5329a6933ca2bb60d08255bcfbd1c8a28c511643ecd072e4c200a3016491d013978a2abb5bbe5a1b",
"signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
"userId": "981716494"
}
}