{
"manageEntity": {
"action": "Save",
"entityId": "702072666",
"entityType": "Track",
"nonce": "0x6f6b283d31874023d48a8f7349c442363cb3c8a579bf3fe061eb976b51426683",
"signature": "0xf801337f1833352cd9a861198b64b80eca07ad596cbfe38adf0246efabba90c61312fcc87b0a9f5396419c818c5b007f5cccec7a9d0f29e10fc642900f97caf11c",
"signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
"userId": "280440301"
}
}