{
  "manageEntity": {
    "action": "Update",
    "entityId": "502244184",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x68a594816cee279d83a1f9986fc60119f4e89957e078d7280da97786eec77438",
    "signature": "0x9e773de7cebb46ed7841c1d7882f4938b1a807780ce5d603330efcc5566712bd00ec5bca9228fcaa11072781ff079599ed387e9639048e9bad59dc4f7c6fe1a41b",
    "signer": "0x7BfC7B3BEA8c31dF1FFbb939Fe0495F4eb2c218F",
    "userId": "502244184"
  }
}