{
"manageEntity": {
"action": "Save",
"entityId": "1500190172",
"entityType": "Track",
"nonce": "0x61e33fda29d275dd9655b31fd1a7125bfe4451986bc59406c76c47e6f013ed84",
"signature": "0x9ec845e7071bdb41545fb09770f31a9851494e489c96934a5b2ccd4a0dc2c1d35fb5c1fc4bbc208b020770553e8cb9534a4e65d1afd251cbb9085f30e602c3a41b",
"signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
"userId": "354535"
}
}