{
"manageEntity": {
"action": "Save",
"entityId": "528799707",
"entityType": "Track",
"nonce": "0xa189666dd5880bd719e6f964d69d41fd47d2e30a2ae65cac7656048561a19497",
"signature": "0x2156a23dc2dbb184fa9d529852213c9fbf0a11cda239792a5cb417ceb9c6b0f2687ba4e782d384019da7da5e33b4999048f1fc8cbccef78d99d56a2d235308441c",
"signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
"userId": "528688046"
}
}