{
  "manageEntity": {
    "action": "Update",
    "entityId": "986457349",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x78c51196648122a385af0395cc2735c260f2f8b623dccc5de8862e2b14127b3b",
    "signature": "0xafe4a5c57468b5898d212d95e7a91929060b438b9c67a1719bdd7e58494c3a4c6adfc6ee39d7b451c893a1db8896ae3a638df21c9f683d43feec102323174f931b",
    "signer": "0x7509F1979235a6748b215174634F806286Cf9729",
    "userId": "986457349"
  }
}