{
  "manageEntity": {
    "action": "Update",
    "entityId": "955023200",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0223a1d0a76d4e4a116d48374547a422635096fe694c47a51e40ee4d9d4baec6",
    "signature": "0xe9df3e171b35f68fad737f8b222db9efeb9c6c6e9c3b2bbaa474d072a6a62b7b715b033d5aa09e7acbb62e5ea7b6ee8f26ddd3e05b1b3ed1fb626c1f696a1c001b",
    "signer": "0x407c7ecBdb58F8E513Fb1E3b4a764F67470D2f21",
    "userId": "955023200"
  }
}