{
  "manageEntity": {
    "action": "Update",
    "entityId": "490408969",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf1fb400f062bb60b3d0003abbb2c5030f7acc3a245afdc335c78f60b179f489f",
    "signature": "0x04c5e15abb1025713facab4fd275f81b21ebb7c70d2a31bac1dbd55c75c583bb10f15a88102a4de100a7cf4ca2b41e7a376dc8bbf31dfdae8b865204d59ba89e1b",
    "signer": "0x54C4Ca69528DB72E771432D2Cd644208d9a3C9de",
    "userId": "490408969"
  }
}