{
"manageEntity": {
"action": "Save",
"entityId": "865772088",
"entityType": "Track",
"nonce": "0xd2f4153846bc5fee2a49b53a2292628060a64e8a81ec6adc0ee59b07d1c6c9a2",
"signature": "0xbb88d0dcd21e71a77c641ad005fe8d5b19f4b6925f401f72953281c7f4890e1f70d0a624bd84b497f8da609227d00939879f02987a95ec92d3bb100232fc236e1c",
"signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
"userId": "280440301"
}
}