{
  "manageEntity": {
    "action": "Save",
    "entityId": "1753004316",
    "entityType": "Track",
    "nonce": "0xd95f32810ac20aa26202d5f7d0e5a9a076360315192c4cbbbdb0862b6c2f2ef5",
    "signature": "0x6e602d1288660037436d8a9a3ab2d0f74dc9ef5338d8c33979b1fcb7bc91c1bd28ebac952e84761e9306da8b9e80a0784c24fa28b3a8b1cf33ae887b7f1f38321c",
    "signer": "0x8DB1cfb49C2DF4A215d1105b81eF0A0e229497D4",
    "userId": "426986822"
  }
}