{
  "manageEntity": {
    "action": "Update",
    "entityId": "781355398",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc277329777507fa95eaa5a18fca68b323c912a3323e0337ba7080dde59689ca9",
    "signature": "0x046559540fc80b023c181948d0156716864fc67b13f5e756c4fc98e1260f59134a678dd11e0cfcacf10d939afe1171ddea42623ba332231fa8c3c46e3c11c16a1c",
    "signer": "0x2A3f50b5422A02b93B649aC6F727FEc0f41F23bF",
    "userId": "781355398"
  }
}