{
  "manageEntity": {
    "action": "Update",
    "entityId": "586523884",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0a77a44923218cd2e8ae3a4f99c98bd282e26c1cd8c2e7dcd08bb0435f727f30",
    "signature": "0xd72fe2abb69ae88f158469a9cfdb5dce28b615e012e2e3db3dbe72e3c11f338d6a74ac83c0f66a3f5be766e8477f77fa612d0354bc1ab949248de45056ada80d1c",
    "signer": "0x9f48fd49eFECDB7396d1319B50C861e0616699c7",
    "userId": "586523884"
  }
}