{
  "manageEntity": {
    "action": "Save",
    "entityId": "128611830",
    "entityType": "Track",
    "nonce": "0x1f4ecea449b89876e52d16f20849be7d13f9c26b178af9e5ee9c1593e1f46d8f",
    "signature": "0x333cfcd759d79c2b97596d1a934d4330da8af083adca859ef5f9c62e0a662d0e4dce500bd67d2a1e2fd573293a016c70d5c4b5bbb4410e4b4e9775487bd137d71b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}