{
  "manageEntity": {
    "action": "Update",
    "entityId": "328056745",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3007797d8333e2a94a679e4729cb2653cd99932e68def9636d62c87e122227fd",
    "signature": "0x9947d414d53322b5d9d96811dcb6339b033e9a1ba4a210235fdc6fa22eb4961b482dfb7740c0d5a4f2460381f8f01a28f7e90857cf7bca06cb35794e1820056c1b",
    "signer": "0x75d782C5a68f76DfA69c426479B6ad14383D035f",
    "userId": "328056745"
  }
}