{
  "manageEntity": {
    "action": "Update",
    "entityId": "121094478",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb47931c67d8d7c4f0dcae545095fa1d0b775be6ab4b5fcdd2fcd498098329431",
    "signature": "0xe65311de03200cd4cd520ad304ddebf5724f88429dd1e49ba101beae5b8661081e11e08323cdae312ff46597970fe954d0b66512004ed78d8c3ff7df96e8b2c61b",
    "signer": "0xdd257a65C3E6b2f9019ee50DFd152306BC197EE8",
    "userId": "121094478"
  }
}