{
  "manageEntity": {
    "action": "Update",
    "entityId": "715573876",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraugggxe3osdjhp25pcqute2bdx5wssuafun3ah7lnmq3ernvfpoyq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":629154592},{\"type\":\"playlist\",\"playlist_id\":375592719}]}}}",
    "nonce": "0x94a79b2080195812b0a2fcb3b496ea6615bdf419274ead70a97786a34d56a1fa",
    "signature": "0xca56d39c55e1528ef366b6a66e89d75bb1b1745e7a10e8e06eccec7cbc2358c21711a0fde222818b678d142f547588bb72346d73a2b00c534e86c8f807b73e801b",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}