{
  "manageEntity": {
    "action": "Save",
    "entityId": "192755676",
    "entityType": "Track",
    "nonce": "0xa07a73bea23129224461d04d1c44871f460b7c384b283a29871def9c1b63b07d",
    "signature": "0x28b65c1f4fab3fcbd587fc4801a17e2db80c557f01691c8f6d34f553044acf81109a595386a36429ae34bf5952ab9ed98e7e951b7b385c101fcf015314990c861c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}