{
  "manageEntity": {
    "action": "Update",
    "entityId": "639933802",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1d04ec1be47cf68c205ba6d8b546ffdaa7a0600dca3767edfa6518f8792a65b0",
    "signature": "0xd548923c3e8dc5dc7898f6f8f3aa2cc2e573a4e6b532dd771a7dc69c9f47b45a62f45b8e05336c77a98a2306d1fbfb6aa7db6b38e960d1f918b901503f0618de1b",
    "signer": "0x96529BA0eE1b687D357698B79290Fc6b83475E45",
    "userId": "639933802"
  }
}