{
  "manageEntity": {
    "action": "Save",
    "entityId": "127162",
    "entityType": "Track",
    "nonce": "0x8a316ce4b9758b9462243d93ee7a8188a79d3899c8abc10055a7520bfbc43646",
    "signature": "0x99a009d7d0f38243c31903c9838b72b2dd9f157c3db3718426bae19dbecf0e3c59892ad22bee3cad66dba279a6a28343bfbcc8ee6dea860a98271fe99035d36a1b",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}