{
  "manageEntity": {
    "action": "Update",
    "entityId": "723855141",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x25dec1aa2e7f90a5c323188332260560900b475573935e44900d0877cb167324",
    "signature": "0x2774d6872caa714b7e81fb204e11b6f2c1dad75bd240b869e70328ad44dd0db54bb1861da04d172ea550076cb65eeef9ae41508f5540f17799ce4256248bbee41c",
    "signer": "0xD458Cce3c2602e75182048352B283CaAf795CD22",
    "userId": "723855141"
  }
}