{
  "manageEntity": {
    "action": "Update",
    "entityId": "146147487",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierax2t3jqdjufdnbmv5forefrdjl3esyxhjgux2ts76czkmttrjyfpq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":555008000},{\"type\":\"playlist\",\"playlist_id\":896542634}]}}}",
    "nonce": "0x9e3d623aa49fadebc6ffa4aae4d07c7c001094e9077f4976b98adbf2bc82c937",
    "signature": "0x2e26d92120ea2c11a803e48a256338f6bf2ab90f178ad40496b4df2061f8626839c4d1e84af5c7abad01570a5cab9597e803a3377e805511922ccf21253915f61b",
    "signer": "0x4964108b840Fa39C00999Af5e1B66E0455e04Cb2",
    "userId": "146147487"
  }
}