{
  "manageEntity": {
    "action": "Save",
    "entityId": "160292715",
    "entityType": "Track",
    "nonce": "0x230d1a321429e78dcf3b509b39327c837dbd50167d19c70c19fe6843028041ce",
    "signature": "0x88ea05ab0e566e66c4a4386d5ddc80081035338c99b628e900edbf3121b2cd752c0884c402e63ec4f770a68e52d6d2fd41199ae910fbf28c55fbacc646a086181b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}