{
  "manageEntity": {
    "action": "Update",
    "entityId": "187732870",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x535726d0669efb782b3185c47cbd13561220c345a8a2bae06fcf39bbc04f74a5",
    "signature": "0x26e13990297486911930895b64ad07698b0003f568685bebc6bf6eee3127686107c96613cb7e03748f2215173840a2404cdb8326b875b2f3b0adcfdf2c9f30b11c",
    "signer": "0xFC32f4D3abfCeA6ddcD3501F4E8794e0d6d85041",
    "userId": "187732870"
  }
}