{
  "manageEntity": {
    "action": "Update",
    "entityId": "690093689",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x54c9be1c85b39dfc8208ae173203d79494d9ba07ed48c621ce292f316fc3c7da",
    "signature": "0xc64f9b5e0bffab9a9695e6067c284d61f3a3c95c5e80448a2f9dac1c8725ee330413806b655365d43ce07b0feb2270eba1b80ac0992ca9f43e67072ca612ed6d1c",
    "signer": "0xbb3b8C270080b0DAE42411345FCDc6a00369e247",
    "userId": "690093689"
  }
}