{
  "manageEntity": {
    "action": "Update",
    "entityId": "834636350",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraznuyghoflnxynhqz26xh5mmrxa633tsdn5t26qa2hvcoticegzbq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":521330105},{\"type\":\"playlist\",\"playlist_id\":1394640885},{\"type\":\"playlist\",\"playlist_id\":477009929},{\"type\":\"playlist\",\"playlist_id\":1420596467}]}}}",
    "nonce": "0x779904a897cd66f1cb685725930415ce9c32314a0da312e95a534dfc68d82117",
    "signature": "0xe63c5a3ed7266a62cbc954a69dd903352c7d3b1ea4fe4ad570b34bde6bef7783445266bcce834a7a1e390dff5c944e8afbca99fb1d0ece9e5ff929e79a42009f1c",
    "signer": "0x61aC959C6029A2Cba66cD6B9AD35c9d7120DC52c",
    "userId": "834636350"
  }
}