{
  "manageEntity": {
    "action": "Save",
    "entityId": "161979163",
    "entityType": "Track",
    "nonce": "0xa6d6ee717cd5e31e38c64d16c970a1885fb44d6cda912cd7b8ed930104fd27dd",
    "signature": "0xdb6735e279d77c90b6c2677ba655994a2ea00b59decbacf517dec04beee828884a85beb0cd882a6206873f2d8e5457aa3fdc43eaa3c3aa713b40ddf3c06647801c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}