{
  "manageEntity": {
    "action": "Update",
    "entityId": "356885518",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd596bf40b7d8b13fa56dbd4867088a125dd94d487c1958cc38b37f250e232cb6",
    "signature": "0xa664309f90f3daa5472040aa16e1ea56d3c25630c9f720edf209b43295006fd139949f454c03d0fd1a6d0c5c807985aa5420bf22e306b7ea1723d033498a39ac1b",
    "signer": "0xd48A7d94FE1bC18C3083f5426bc7A1c2337F709A",
    "userId": "356885518"
  }
}