{
  "manageEntity": {
    "action": "Update",
    "entityId": "457352287",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa27cb2f3c8d95997c45cfc8210f1b0bd9d57affabbc3bd4834215f4693956175",
    "signature": "0x46c4aa7beb892711c84aa34bdc1fbd9def15447ae6716f70f4b5970449b028ec785480e594ab501cb9386466d8cd3049dff79d17e95149cdca7f2a85915168e91c",
    "signer": "0x67643F9FD6FC62453f7BE31F8f414A602Cb1d074",
    "userId": "457352287"
  }
}