{
  "manageEntity": {
    "action": "Update",
    "entityId": "648437395",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x43eb41f06c302045d6c573dae4b9f84263a1c0e688122c4dca4ba77744d26212",
    "signature": "0x42fac9f177d505489a22c258170420dcbd51e2bfa0f515e24034bc65553c2304324da1dac7e2d8431ff5c62ef44b7917c17c3c7732f92a16299d596710baef961c",
    "signer": "0xA14f5dF620E9B04F90af9b039d3c38167aA90b2A",
    "userId": "648437395"
  }
}