{
  "manageEntity": {
    "action": "Update",
    "entityId": "950485788",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x05538ad75e62ac1af7660f92b8073640428cecac4489af2d8ee80261a25dbe2e",
    "signature": "0x3762b4e4150fe19f2f30672fbbedbdf135dbac0a6c5cd16ee5e52860c4b5eabb262579487c8578d0d41108536c087767a64ffca79a3c704bea066f65c368e9961c",
    "signer": "0x6CF29C21c9C0b405C773f3605658C095Af4c28EF",
    "userId": "950485788"
  }
}