{
  "manageEntity": {
    "action": "Update",
    "entityId": "648959487",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x98683b62c64dec24fdb48d2632267a5b26896dda26fa6c923d8de9edc17b415d",
    "signature": "0xb426595a18422a393268cd7610b8a17826d9d8f7f32410a0ef78291bda0c14953f983ea5b9862f6f2a4e45708853e874f6b9d9056c2b8a1ad58df27766e701e31c",
    "signer": "0x7b8621A65C6FD0422223367A535BB694317A7cda",
    "userId": "648959487"
  }
}