{
  "manageEntity": {
    "action": "Save",
    "entityId": "62420896",
    "entityType": "Track",
    "nonce": "0xd4f717a96c2641a002ba7065597c3e420011c56bcd77c5846e0090370e7c27f1",
    "signature": "0x93195a7c9b6bfa41a8abbc38b3401749bda061253639437bb6dbddc89d9b6d88246128b2bdc34c59e2adc1a9bb08645ea0f1d8611e4fc34cc74ff655975dd1621c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}