{
  "manageEntity": {
    "action": "Update",
    "entityId": "169107670",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x19423d7fbbcf20d900506a7dc52548970cd9be0116092440efffacb08e7e46bf",
    "signature": "0xa16ff7a1357ba2188372bef0c3f055bde2c90277b2365c9956175ce2ebcbbf844a2a05926fff39dc8cc60a51d5705541f7eac393dd3c8cde5ce48ec72b0cb1bc1c",
    "signer": "0x64888D03Da93901A9ce859716E8D5E9ECCcD9DFe",
    "userId": "169107670"
  }
}