{
  "manageEntity": {
    "action": "Update",
    "entityId": "344552512",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaf5a66d7ad3abcd8295ce480318166d411d0569b94178abb312003da6504160b",
    "signature": "0xd0e08ef60dff98c72bc8a540cbc052c069ba305f371d21dfd429b1f9131f306015e22bf73f25e861708b514449d71c9d733b5bf75d9387b2f7895d2572c3fbc21b",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}