{
  "manageEntity": {
    "action": "Update",
    "entityId": "390842696",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf536f71d875ca61e280faa6f8664ec28394dde60242e5d2dc85bfdec8787d24c",
    "signature": "0x376a2a2ff30e2809c00d0125e206ab6511963332e1a8b73e426b9b6d5bb3e23549ec1adf07f43ec852e943f42c577a22aac39cffc6d2305d5d23748a0e3f049d1b",
    "signer": "0x0b0e27BBe16c7cC4AD64C9c79E00f1fc6cfaA6B9",
    "userId": "390842696"
  }
}