{
  "manageEntity": {
    "action": "Update",
    "entityId": "303397856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb3a2eade012939d6b9f161bfebca74f4e2b2daa9f875413b1a57356364570594",
    "signature": "0x6721bb2a7d89b61dfb8cd9f6c43b25251cc193c5cc92438f5ec79588b88dd9e33659ad18ea8e23c735845b54b63226c6bb720cd102ffcf27164e81b5f3dd9f011b",
    "signer": "0x2956bF79d75b2915Ca9c90f4E8A2937eF502b366",
    "userId": "303397856"
  }
}