{
  "manageEntity": {
    "action": "Update",
    "entityId": "557135181",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierak2gsachs32aukaqtceryj7j3fanmzaiuxmngq2gakzumwb7z553q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":533815830},{\"type\":\"playlist\",\"playlist_id\":1088676470},{\"type\":\"playlist\",\"playlist_id\":1219210338},{\"type\":\"playlist\",\"playlist_id\":147244417}]}}}",
    "nonce": "0x53accc6261d930702a004a131589df8c03fcdea5fe27485570ba4afea2fa756a",
    "signature": "0x7b5464f540d9262c556b2cc93e60cb1e7dcf181942aeddd7c4dc0b629929b9d11bb972d00f0c7ac3032a0ef4f936bca0f7eadd90d4d83fa719f2095477341f771b",
    "signer": "0xBBBE9eFc177a4E708d317195Fa81aA6E8E2F7E92",
    "userId": "557135181"
  }
}