{
  "manageEntity": {
    "action": "Save",
    "entityId": "1332349662",
    "entityType": "Track",
    "nonce": "0xa86561e1171e3057ec72e1a86ef125185b856efb80d46f030888ac44a4edc43d",
    "signature": "0xb89dca58ed884ecca1206694e8329d91e32de222dd7ab9722c674c3e62e773ae210d6957efe99181c4b7f3671fe0ffafe9424d7982d5cfa172525b349c7e1a0e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}