{
  "manageEntity": {
    "action": "Save",
    "entityId": "527080810",
    "entityType": "Track",
    "nonce": "0x110847641c62fd4101c23aad9f1bc7a097837c1c0e057567a5d2d88d0f0c1f40",
    "signature": "0xa625eab10ade30d4cf4f68fda029be516eaebf0f7529c749a977928d17841732316d260642b34e91498a6d668554539a4efadb0d6f7587bffe8f3105dd67dd361c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}