{
  "manageEntity": {
    "action": "Update",
    "entityId": "871646096",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x878539e6eb0abb6341f029af4b913840418c949b027a2b35f3b32e2fb618401e",
    "signature": "0x25def60fb00682ccd49eb3a9bd06229747c0333c45e8d9b1896be54b9b86f45e12d2cfd8d06e12e4526848eaef4291d039a35e9b13d0c28660e9ef357e48f1e81c",
    "signer": "0x8B4dA74eb8aCD12Fefb0F63f011537c562589a98",
    "userId": "871646096"
  }
}