{
  "manageEntity": {
    "action": "Update",
    "entityId": "876735576",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfbf996bd6fb1a9ebaa1115727f2ccf444b509404f81c65633288c9351285b20c",
    "signature": "0x478aed909ae3f5a868fa1e06027184582ba83eb0200e184e5b7eb371e13d4c604f2e05fc1e53f600fe5bb73a9cc7229579af5427f9a53eb630e617f84b0ab6761c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}