{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x257818cd3d873264cae5f7bf63956f46e526ac9b27887cd2f7b2bff0632f7577",
    "signature": "0x59631943363e07c13937c79097914fa24191c3e48ffe3e8abad517e3f19222714226dfbd1762e8450d825832f7f47a824f3cc78e6f3e6e3c48426a2ec64d3aff1c",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}