{
"manageEntity": {
"action": "Save",
"entityId": "242563728",
"entityType": "Track",
"nonce": "0x99597582d1fcf1d05c06db3ed64502f6d155c43606415d28ae6bdb4f4d801e7f",
"signature": "0xb668d6697478afb953cf3213c10b183ee738981ebf9fb5fec07f974585a45c5c50d4d15e597314335447a076c8bde74da8165ee69ea56009194613d24c4ae8371b",
"signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
"userId": "280440301"
}
}