{
"manageEntity": {
"action": "Save",
"entityId": "55521956",
"entityType": "Track",
"nonce": "0x718dcf1332c56cfdab2a27f3608d8cc7c95f81a1a553dc74f04fb7680a843666",
"signature": "0x9a0430eac27f7d9314c5d39726ff14b4c99fc65c530ab7a69587cfb3135daba858bd7956c7eec617cbbca9ff2465e1ed826b5669b0bef1a339bb500b9f23c6171c",
"signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
"userId": "55290787"
}
}