{
  "manageEntity": {
    "action": "Update",
    "entityId": "418312750",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x752b73dfcf58de1d31e0525b9b10eb378b5d014b6e6d7516aeed3b4df7f1d0bd",
    "signature": "0x64bd7dfaf19fe26f8aa9aff0bc8fbfa3cb7b06262ce0de32f944a07273abb71d2fdeb77e04fa4f2bcb5b155ee614803fdf10b8dca8171cb371ef2f8a827ac29b1c",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}