{
  "manageEntity": {
    "action": "Save",
    "entityId": "1195073541",
    "entityType": "Track",
    "nonce": "0x83dc908796cfc0c8ee0683b1c001ef6223afa335aa6e84005510ddb19154ff98",
    "signature": "0xcde18f1288ac98f999c035bf5294e8b6d808aae708a7083be02d9acbbcb310db71f831819c6dcd67f947de88f4564031f280642b611ee2b7ca1d7327eb7bb03a1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}