{
  "manageEntity": {
    "action": "Save",
    "entityId": "2072497493",
    "entityType": "Track",
    "nonce": "1790110966429403214",
    "signature": "0xee7a1f7b86783cb47d995447e5710a94201daaad77d4311c14891d580a8351d61640c6a298ff34440b8d68ceb3411b243bad72064fcfde3ecd0646e704da7aae1c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}