{
"manageEntity": {
"action": "Save",
"entityId": "1315375136",
"entityType": "Track",
"nonce": "0x7811f368353696874b1e8e5ea07d40a42a663c477fec64f0b62eb76f4d4b5246",
"signature": "0x2d0b80e16d6826751ec432d29a6545666a9ae986879ccdb6955c9afc620d66c0728c6bff0b135e0da569f2b3622ddf72039fbc94d4c83ee6e160f79c4a2f76991c",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}