{
  "manageEntity": {
    "action": "Update",
    "entityId": "139700372",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xebde5805a534a9af1f870a73682ba0282277a2cdab806e78099d7236e63628a0",
    "signature": "0xad46908daeb0167debf60fe054efce83b0adae82375abd5a21b0cb87fe9fcc097d2acbd5e5355f2d2c984602b36625f14ff768f03ad20873a0915fc5407738231b",
    "signer": "0x04c12B1E907C93Bc156ef0786b3A7f71b36527E9",
    "userId": "139700372"
  }
}