{
  "manageEntity": {
    "action": "Save",
    "entityId": "126283",
    "entityType": "Track",
    "nonce": "0xfd1d938b9c60f2521cb951d2f36343ac65b5658ac7fb73bdb0fa39e47833a177",
    "signature": "0x2caad8f31e5c262b840abc8cac437a8e12d26ab67510757536f97af0b1d0bc496d9cc4c42473a30638f9b717a2908157f1c0f6e80bbc6b926909d7aae8f018db1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}