{
  "manageEntity": {
    "action": "Update",
    "entityId": "645293242",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4a70d595b52527ad6aca57d194114c250e048a27f337683506e3e7e6ad460f55",
    "signature": "0xf54bb2b6c6833bfabe95ca710a1e8970cff73431f2af4e2220b8208c7c955f177f801b61ca030b9c519fde9b540799b838525ac9f262c9ae02db3a84d07cb6b81b",
    "signer": "0x328D1E69b7920419F3bb7e5B45BbDCA1016Ec0b6",
    "userId": "645293242"
  }
}