{
  "manageEntity": {
    "action": "Update",
    "entityId": "75683930",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9cb513d60e74ff97c43d90956e99babb33cd77a785d049ca552712183b3db65f",
    "signature": "0x2129a5c091753c8cdffad9e55ce38696b10fb620a689c70ec7989051b0e86e291636ffbbfba05713758c64f245dd362db486209a524c5cb00d2fccb5fd2d1e611b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}