{
  "manageEntity": {
    "action": "Update",
    "entityId": "587496127",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x16e5d03da674a46e5ae6ed8f49ac36fe35d69a4c490cc8ff37332ce1dda11a6e",
    "signature": "0xf0de98d2572a2afe629a1282cddfc97816efeaffc9f6b1815439fccdd2fe5fac19df80f27a363b2202d18941235b88d0337da6fe94fc67abbaf31bfcdb451b231b",
    "signer": "0x78CF3E90d6e66C1b735fCFd75dE4e88c3F67415c",
    "userId": "587496127"
  }
}