{
  "manageEntity": {
    "action": "Update",
    "entityId": "891501053",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x00554ea39428b5afc20d8f25f090a3b1b46ebcf453809040115d521cffa40900",
    "signature": "0x73a20d8cb58df193abff051319730e0b577b1b823b404c4395b0c47fa5d13a8923d27fc121cc237402a6e2cf9c9553471c723ca86ffe06aa27dbfe1b67a6ca9a1c",
    "signer": "0x57cAEe5eA82f42935417a3Ee55D1a1c8E8205709",
    "userId": "891501053"
  }
}