{
  "manageEntity": {
    "action": "Update",
    "entityId": "408787447",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x70e3b3eac5b38da12dd1039f7f32fc6e383629d268906ccbd4de1e50256b58fe",
    "signature": "0x9d878d28a5213911030f6b3d67df0b6a3bdeb590ede19575773468f33ed19fce455efb1fdb17226f0a27141811f53f60dbb54b1fa0949458251e35c3a0a1efb71b",
    "signer": "0x2fd9a04B003c051a17F494b483bd14D9b4a50f04",
    "userId": "408787447"
  }
}