{
  "manageEntity": {
    "action": "Update",
    "entityId": "985448570",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe9698578e0ec27d22e8cfee40f537cd7a9692620e50c1c46cd07b7eab1273b99",
    "signature": "0xfe28782f3a79ee65c9505a4dc84d0d72b232cbf523e66e7abe0c3029adc5ae8204143b494f596e616361fe9caed491274bcd83eb51f0e99d978d00797e2a5dc51b",
    "signer": "0x722c1135B8C86568e7E41305ebD51A35D89642D7",
    "userId": "985448570"
  }
}