{
"manageEntity": {
"action": "Save",
"entityId": "1897391631",
"entityType": "Track",
"nonce": "0x7636d58480e8d24b75cbac70214a244450278256fed3d5dccd0b0db68c94291a",
"signature": "0xec558ed4a896da64aa14d1d48811c7fa3e667760e7b38a214f7f258734271a3d2356734cde304d43e257bfeda99da70236e62b13ed8200654093f934f8010a8e1c",
"signer": "0x95bc9101F0E3125Dab3b9e39ACc2b72eE7C8a02c",
"userId": "380062588"
}
}