{
  "manageEntity": {
    "action": "Update",
    "entityId": "915459340",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfa8385b226631b10b8c1e04deb3da1821b58f59c3cb19ee50f34831646a393e1",
    "signature": "0x22cd0a9d26dac643782d361c20ca94a9dee8871e450e1d0cfc37e912fe1a04c3406f63bb1c39baf7873ca56dfe8680e282fb819ad4094484477f5b3737a5f99c1b",
    "signer": "0x6667a1A099d3e340AeE3b64579cA139546d87216",
    "userId": "915459340"
  }
}