{
  "manageEntity": {
    "action": "Update",
    "entityId": "522935014",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfe9f9ac155fa002677037d7db6ebe1450570335ddfdbcd20ec25841b2e40c167",
    "signature": "0x69624876d2c72458ee35c87a14507fcf80aa1634fff8ab13ad80aee93f2fb5b061648f851f251bec06965b4222d0429c93fce68bec30b242df16d3d46678dbc51b",
    "signer": "0x47A220481bB19e8039cd12fa6c01cd65646EBF16",
    "userId": "522935014"
  }
}