{
  "manageEntity": {
    "action": "Update",
    "entityId": "816727631",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9851ea38997ab36de4948873065aa731a5600ea79bcb649d8844261e97c38b1a",
    "signature": "0xb1a8620d972d01390c041d331bc227c400a80c24f95b781e2013fa8a8315be2d53bb21b87df2a8396fbe31d99d310193f827233b6362aab702090e63e328969e1c",
    "signer": "0x09F85Ca34d9D1932caC1040F3f3Ccfe0e01f4738",
    "userId": "816727631"
  }
}