{
"manageEntity": {
"action": "Save",
"entityId": "1545026864",
"entityType": "Track",
"nonce": "0x44c7bf2f832f10f53111ccda03310e170aec5d23b9284157ca3b8e2bc6faa9e1",
"signature": "0x93c4c2ece37b2911bd1dbd6a71c34982729a60f02cc4d999e6405dbd30e6be990127716e3f2c55c2525a5244bc630443b88eb55173c3d38177951d2f709cd5811b",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}