{
  "manageEntity": {
    "action": "Update",
    "entityId": "504172897",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbebedde11e2edb0599d6d362d028fd4017690eeb02033c934cf253f002cfbf8e",
    "signature": "0x1f0309df16d94c9bf821650618cbffb19afc3cf6de32202d68c71c18d5141b4f253e942c6b8d5e0839792c5d7ee4d5836a0a72f9c985d8d0d2bd89f8af3e32221b",
    "signer": "0xA656a2329Dc742F06e5FA85bc5c9dEC6677D646B",
    "userId": "504172897"
  }
}