{
"manageEntity": {
"action": "Save",
"entityId": "598320991",
"entityType": "Track",
"nonce": "0xa5973f2aad4ca106a1dcdc00b9a8e6dc8f8f569a38d327888b241876a5b3affd",
"signature": "0xf57f864f2983e11aef073a01743d7a25f5a08add2fa8be1e8630b59a3c34ae5f5107ae3b9b08df9dcb594e674fc35fab2ebf6891650a2631f410325a8869d1c41b",
"signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
"userId": "636236864"
}
}