{
  "manageEntity": {
    "action": "Update",
    "entityId": "407046354",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x60602ac9cefba914d664a90ce614d1dc6f195c47f563fe94a90b174de3920ed1",
    "signature": "0x511743319d6a9514706b473efd0016492e22a15486f290b0921447cc5df04d6e43ea0b8dfd22be83e812e64345be25c897d7af9def5069d12a500840608d8ba11c",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}