{
  "manageEntity": {
    "action": "Save",
    "entityId": "315827028",
    "entityType": "Track",
    "nonce": "0x589cff4b06cf92783a662feb97a0431881de9f9655f01f1ec655ba54acd4417e",
    "signature": "0x8b0cd7aa98b60917e968eb17244804214a3ad99569019061084b23a2b6a97059482605e8fe81e12e998d03efd8d243cae00de69308318287e113b38b14bcd2f11b",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}