{
  "manageEntity": {
    "action": "Update",
    "entityId": "37615844",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8fd48964f90d3bd52f474ff5570d8ed22634e3ebeaaae49cd74d9f3073d8b8c6",
    "signature": "0x58f04a82e7175c240dc3e37a2be23abf8a4ea254c12983fb1e734b8bc2049a6317d9a853ffc5107cdca38e76aafec1f2129e0c81f1488d639a4e99c2d5bd41281c",
    "signer": "0xB5335ed1f87170Ae7899343b7D241eAB012bd1f2",
    "userId": "37615844"
  }
}