{
  "manageEntity": {
    "action": "Save",
    "entityId": "2070069684",
    "entityType": "Track",
    "nonce": "0xf8e3a624d03921c522ad71b66c077674c9cc3cd28a7b7b8b58d7fff2682dff3d",
    "signature": "0xf1b5c2c6c3b793b3714d0880148e9ff265acb5462f22bee828fc28706b5e1a937a152df27051d57452e3cd86f3e702c81c5acae55785beedff687b8863891f0a1b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}