{
  "manageEntity": {
    "action": "Update",
    "entityId": "135194714",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4ce5ed0db188af46563b6d4c0b4cb17d69767cc4ac98ae5c7fcc0b924b2736aa",
    "signature": "0x29818cb8ffea86a6988dbfb7f630d091a8c766a4721920dc592e46e05ba3dc8713ab044370a8f0f5edd86723ee5c4adde9361f0e69d8fd29dd5530f9c6251fb21c",
    "signer": "0x369e141491ccFe62c4bc4c6b3f30fF1AC366246C",
    "userId": "135194714"
  }
}