{
"manageEntity": {
"action": "Save",
"entityId": "463361",
"entityType": "Track",
"nonce": "0x80d1b0c8e1dcf488a1e52e0e563d0b3c7b5dac36de83e9bd8e757a4f8164beaa",
"signature": "0xceff6f0a6f4bf830d38845e3d10ab6d29ac8e72b2f830719ec5e59975b1451193556afdce5fac0cc7330d6d1296ef2f9326412e4e46abbd603f66e4ad8ecdab91c",
"signer": "0x46c40C752898Fc7F4F7d6b348FC5438aE9f971aa",
"userId": "84235345"
}
}