{
  "manageEntity": {
    "action": "Update",
    "entityId": "887482130",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8b6b17cb1624eab0cce6ea89b55ba9a85542cf9430d72177cfb0c30107196595",
    "signature": "0x9b46da9531fa536b9f15002383ba2c849fcd591cf2a0fbfc0836b5f661049ab61577336dfa13f696ff882ad21a7ff52029c1fa75b3ddfaa1339f1192d96a92f81b",
    "signer": "0x888539CE68FE63D7A7A333a198827e2C53c5A618",
    "userId": "887482130"
  }
}