{
"manageEntity": {
"action": "Save",
"entityId": "819183130",
"entityType": "Track",
"nonce": "1792447378181447454",
"signature": "0xd5cd3325a5f9d03625b1f853feccedc089f8f2c9ac93b1f2ecb553c128b010952839e1e92593f98afe310dfcd3e73a70ab01dd581b80b2a4876af4ff6be0353d1b",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}