{
  "manageEntity": {
    "action": "Update",
    "entityId": "224019652",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7cf0b237cfd7dbcaa72cbbd4d58a6c97e720fee45e44d9cc4862965f42061c59",
    "signature": "0x60924c4202c742ab180218086ffe7fed5ef3dfa0c7681cbe1c1e016cab6bb4582532a1a2bb6ff400710641ae648aa8e5d32f4d0061bff00603c81d9e86042bdd1c",
    "signer": "0x7964a5eF7E9a780013d3886B40ca04443D69588D",
    "userId": "224019652"
  }
}