{
  "manageEntity": {
    "action": "Update",
    "entityId": "508153670",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0f6347a13af538d2dd795f8d4a7295fe1d4f8b0f1ef6761bdcc8a5de40b8efc3",
    "signature": "0x84ff370a9f45a5ca3624a595bc144f5e4726fce25e284a901526eb3474f0eba06ab36ad71a857934ecdd8314164d0e7419a650fffe797fd5cf2bd5adae50a9981c",
    "signer": "0x877D195E0F5Df3506016fBb0fb1b1E26e65B203D",
    "userId": "508153670"
  }
}