{
  "manageEntity": {
    "action": "Save",
    "entityId": "326983128",
    "entityType": "Track",
    "nonce": "0x1589ddb8e0056039615c5b7466e808b1f5120a4415528d8cb94b466eb713d62c",
    "signature": "0xaa413ae3248e7cd4f4a96212a331359b1caaedb8b0380761382d835d53330fd40ab4779afe6e153caa5f34e0d6584731d9197a14cd9fe35888db4f34f496136b1b",
    "signer": "0xb205e691f66c34ECeeDe1b57Af02073564c2F8a7",
    "userId": "24712149"
  }
}