{
  "manageEntity": {
    "action": "Update",
    "entityId": "737654695",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfa294f3456b58eaceadc35fc74fd9d7135d46cf55ecb06509e10b268adce8a53",
    "signature": "0xec7685a01dd4653ce87fcaaec3fbbcda00ae02b3edda81da4e5df0e2739123dc2203303807917a86925b5e90a0e2f85489152c5ed31ff27356dd06877137e86e1b",
    "signer": "0x850651f846cc7Baa00FE2894e6086f8087eA375b",
    "userId": "737654695"
  }
}