{
"manageEntity": {
"action": "Save",
"entityId": "431649445",
"entityType": "Track",
"nonce": "0x3069c4a8c14fd1851f5839ca9855b67052a907f0bf9ac2ad5f83c7904cc8418c",
"signature": "0x44949cf8186c12085c0ed0f6231b56436f51239b5d272640cf6e07170dbf25666cd3d5f16c0c7cd102a2a943ed012c325a91954dd63e2d4eea1a8c4eaa8322c61c",
"signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
"userId": "571117272"
}
}