{
  "manageEntity": {
    "action": "Update",
    "entityId": "313045689",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierakhwdnern3p2ceevovjhc2okcf6taxm36r4xxkoldvflfnzpuugja\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":605796989}]}}}",
    "nonce": "0x99f2e5c9bfb9afa61afe7c3daaf7592860d87706be31023e2cd29f2a834afc5f",
    "signature": "0x3a524b29f5c6e14628e05a706f784e10219602dbf647879b5d996ba5ebd99f554af6cbe06d40235ff3b51b922eb84a20344f5664f6b792c6efb1de78e85d32c21c",
    "signer": "0x7495ffcEA4B233ca42224EDe45fA94bc245920C2",
    "userId": "313045689"
  }
}