{
  "manageEntity": {
    "action": "Update",
    "entityId": "136385389",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd18ef03594c5880a2972c409b66d92558a27e5c5d241f55fd22e3f2f5544fad1",
    "signature": "0x6131e0f7e970398d3a3b34f91f814d5dccf99b11bc737289ed9ce6933c64e9535f66967f58af035fa3d833b7b9c392e25dd1b29e1bed9aa7daaaa3f68c5c6d991b",
    "signer": "0x4E34c0Bd1f55a64Ea9f04F8692c4183C6ffFe535",
    "userId": "136385389"
  }
}