{
  "manageEntity": {
    "action": "Update",
    "entityId": "350672179",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xceb393164b12c455093cf84980b1d371c548a61f877bf136d73c2c6e615d4948",
    "signature": "0x7c1c3ae1ec961264546f566d08082aec548f0c03d01eba9bdc0172bde069e06c08bfb0fb6e57e04c414e6628dd26eb63332152ce2e43e763df44189c0e9391451b",
    "signer": "0x647CCcD1748cA92d54c28f3986e321d26dA2Aec5",
    "userId": "350672179"
  }
}