{
  "manageEntity": {
    "action": "Update",
    "entityId": "548675890",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7db05520793dab1655d201c26d770c02d832731351bb5bc93a493f449318450f",
    "signature": "0xb73bec89f20d9b541e2619f4dba291ac3b806c787ed7b5660cea4cf244a4ab552c34c8f7a2b97cf884307faea028a94595d4716e189223707e15ce92a45d6a9a1b",
    "signer": "0x7597c344f2cA84759691973cED6234c95796DEf5",
    "userId": "548675890"
  }
}