{
"manageEntity": {
"action": "Save",
"entityId": "217301219",
"entityType": "Track",
"nonce": "0xe8994107c3e56d857ec23b05d8c5a598d90054e18d45a3dfd1c5cac57bb140f6",
"signature": "0x1320b0be8b33fb1e7468004a00854cc200222c8e0f22af3c63f979241819d39c298a388708f9fdfc05a27d2ff78721957a1f828e2033c4a627cf315e2cb7022d1c",
"signer": "0x3D4d8a781454E2338c482dE697d6DE1ACc7D9031",
"userId": "599751364"
}
}