{
"manageEntity": {
"action": "Save",
"entityId": "807110338",
"entityType": "Track",
"nonce": "0xc0e4ec609fa7a3f7dde9577b96958a41f2606224320243b1c028ffa13ec945cf",
"signature": "0x631a8ae9546f3a91762b2e793eb7009388b2e2d2861c28acb1a1822e80d4bf983ce709087efa14044f7b40a3427ec8264bc09ab734172cb42ac182563443b50b1b",
"signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
"userId": "280440301"
}
}