{
  "manageEntity": {
    "action": "Update",
    "entityId": "489312169",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe3e51dcbef09c6b1468d65052cd781c060294191c76222e19869fa7bc3de0002",
    "signature": "0x310e65a2765fecdad759482324d0904d7b20918078eca03c381c0176652b9fe70a8764973252698ce107eaad2f579c5121439c22220f88e6aba4d072e9ea625d1c",
    "signer": "0x3c22a81D38f10F1cD16CE91e03D4aDc697E6CdC5",
    "userId": "489312169"
  }
}