{
  "manageEntity": {
    "action": "Update",
    "entityId": "418312750",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xece4d48948aa4fed55f4fbc5f5cbeaef2e054f716dd87e8bf4cb9adb20c6e807",
    "signature": "0xc3c4a41903100a9681d993e7838e79d2e09d41204d347ae0b9038c3a26b2a96150879e01e12a37b74d444c6b7989c2f16deb0c9d2b647c19c8773f24e4f42ddf1b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}