{
  "manageEntity": {
    "action": "Update",
    "entityId": "325461301",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraoc4oaydyomaoonu6olp6fbd637g2po5ki66a2aclex6rn6qvmvba\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":259034585},{\"type\":\"playlist\",\"playlist_id\":281412178}]}}}",
    "nonce": "0x68a82ac36e7853390d5693cf5a192c76b4b77bb64fe78be3e443c2c8e5f38440",
    "signature": "0x959db9e5fb06a390e7a097608f277f08b67b4e063dfe0dafa24277c9929078ec584e2f6449d4ba0bee1d6aad9b0cb9169e3e478b85d6a4d076ab1c28c8eeed8f1b",
    "signer": "0xF0b189d63dF83744c2388d801b25e9bc50F9AE64",
    "userId": "325461301"
  }
}