{
  "manageEntity": {
    "action": "Save",
    "entityId": "97685",
    "entityType": "Track",
    "nonce": "0x272c0a97595a4cf482642c9a3a4a168af24a63438efada4f5e920bc857dcffd9",
    "signature": "0x68bdc3866d0bdbbf15211e350bc92524adeaf673d28dd9cf3e1d5b3ec1f595b1449acd0828c91a852ede259878cc0f2ce4ac3eab607cd00a3c2fe130e6034aad1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}