{
"manageEntity": {
"action": "Save",
"entityId": "265693419",
"entityType": "Track",
"nonce": "0xb9d89b54ba06b8e1fda19be223be4621c09647dcabb8179bd513003ac3b9ba76",
"signature": "0xc4db107ceb862d63c66526f8d4477c0c2412373e73ba90db610aee2ea7e1f82d29f0589723e56b1dfec152cf1208ae9ecdd26223afb95aaddcce4f0887c6de7c1b",
"signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
"userId": "728570067"
}
}