{
  "manageEntity": {
    "action": "Update",
    "entityId": "576005861",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0521b96a8d74c9c4c945398b3aaa5d85b6a34a91a6c67c8d0b44ae70f5e23177",
    "signature": "0x63558c410bd934f42485d8ab4831563a0efb441da06378d0bfd6195247fcaede75b97944ce64dbc5529ea07acf5276c54593ad1b7947baa6352ec08f1ef106771b",
    "signer": "0xeF17f935f7C83FA2B70C9418DfFA5de7c3225467",
    "userId": "576005861"
  }
}